How to Find the Area of a Circle | Area of a Circle Step by Step

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  • Опубликовано: 14 дек 2019
  • Welcome to How to Find the Area of a Circle with Mr. J! Need help with finding the area of a circle? You're in the right place!
    Whether you're just starting out, or need a quick refresher, this is the video for you if you're looking for how to calculate the area of a circle. Mr. J will go through area of a circle examples and explain the steps of how to find the area of a circle.
    About Math with Mr. J: This channel offers instructional videos that are directly aligned with math standards. Teachers, parents/guardians, and students from around the world have used this channel to help with math content in many different ways. All material is absolutely free.
    Click Here to Subscribe to the Greatest Math Channel On Earth: goo.gl/XHTrfY
    Follow Mr. J on Twitter: @MrJMath5
    Email: math5.mrj@gmail.com
    Music: www.bensound.com/royalty-free...
    Hopefully this video is what you're looking for when it comes to calculating the area of a circle.
    Have a great rest of your day and thanks again for watching!

Комментарии • 589

  • @MelodiesForTheSoul
    @MelodiesForTheSoul 3 года назад +557

    Never thought I'd be having to learn 5th grade math all over again at 28 years old but here I am. Thanks for the videos!

    • @youssefalwehaib527
      @youssefalwehaib527 3 года назад +76

      this is 7th grade math idk what ur talking about

    • @BengGaming
      @BengGaming 3 года назад +74

      @@youssefalwehaib527 umm
      Say it like "For me, i learned this when i was 7th grade"
      Not say "uhh this 7th grade math"
      Because not everyone learns anything at the same grade ya know

    • @dogdog7883
      @dogdog7883 3 года назад +25

      i am just now learning it in 7th grade and i hate it but this video helps

    • @olganmg5407
      @olganmg5407 3 года назад +5

      wow 🤣

    • @xuan420
      @xuan420 3 года назад +9

      @@youssefalwehaib527 it depends on where one lives i guess

  • @low12321
    @low12321 2 года назад +212

    Bro turned an entire lesson into 6 minute video
    Thank you, I need this for my final math exam 💀

  • @Dark_rai665
    @Dark_rai665 2 месяца назад +16

    Blud teaches more than a teacher for a 6 minute vid to an hour good job!

  • @everythinggurlz6725
    @everythinggurlz6725 3 года назад +115

    Sir tysm I’m abt to do testing so I’m reviewing some math questions. This really helped me I never thought the area of a circle be so easy!

    • @MathwithMrJ
      @MathwithMrJ  3 года назад +28

      Happy to help. Good luck with the test!

    • @joycole9536
      @joycole9536 3 года назад +2

      Yeah it was really easy

    • @nhel1492
      @nhel1492 3 года назад +2

      Same

    • @Hydrationator2
      @Hydrationator2 5 месяцев назад +1

      in school i learnt that if a number is able to divided by 7 then it could use 22/7 is that correct or no

    • @joshuajoseph2692
      @joshuajoseph2692 Месяц назад

      @@Hydrationator2 Yes, that is correct. If a number can be divided by 7 without any remainder, then it means the number is divisible by 7. In such cases, you could represent the division as a fraction using to get an approximate value for simplicity or ease of calculation.

  • @fearthypotato1990
    @fearthypotato1990 3 года назад +14

    Boiiiiss Because Of This I Almost Had 100 In My Math 🤣 I Had 97(Grade) Thx For This Guy's Vid's,
    Thank you soooo much mr. J

  • @lei354
    @lei354 3 года назад +43

    Hey there !!
    Thanks so much, Sir! My final exams are in a week! this helped me so much! please continue making videos :3

    • @funnyshorts1110
      @funnyshorts1110 Год назад

      Hey I got an end of term test form 2 and I really don't understand the math so I'm here willing to pass mathematics😂😂

  • @shadw7719
    @shadw7719 2 года назад +6

    Thank you so much!! I have a test coming next week and like most people watching this are struggling like me. But this video really helped me out!

  • @bellsdanceacademy1495
    @bellsdanceacademy1495 8 месяцев назад +12

    life saver, always can trust and watch your videos to help me understand math. 6 minutes and I totally understand it now. better at explaining than my teacher. thanks so much for this ❤

    • @thecloudiris
      @thecloudiris 2 месяца назад

      САМИ, мой учитель тоже так делает-

  • @JoseCasillas-xg8yu
    @JoseCasillas-xg8yu Год назад +30

    i believe you made a smaller error in finding the area of the first problem which consist of the radium being 3 inches, because if i followed the formula correctly 3 squared equal 9 , then multiplied by 3.14 gives you 28.26 not 28.27.

    • @Malik-mx8st
      @Malik-mx8st Год назад +3

      I noticed the same thing I was replaying the video a bunch of times scratching my head trying to figure out how he got 28.27 I got 28.26 and even typed it in the calculator and got the same answer..

    • @nicolebentley559
      @nicolebentley559 Год назад +4

      @@Malik-mx8st I had the same issue, but if you use the pie symbol on your calculator instead of using 3.14 you'll see how we rounded to get 28.27. You may have to switch from a basic calculator mode to scientific if you're using the one on your computer.

    • @kdub175
      @kdub175 11 месяцев назад +1

      28.2743 = 3x3x3.14159

    • @forrestdedenbach4418
      @forrestdedenbach4418 3 месяца назад +1

      Im getting no 28. Anything out of this and im using a calculator on an iphone. Simplified this problem is…3.14 aka pie, times 3, 3 being the radius multiplied with pie gives you 9.42477796, squaring that to itself makes it 88.8264396, all of the multiples in this number are multiples of pie.

    • @forrestdedenbach4418
      @forrestdedenbach4418 3 месяца назад

      But i am not getting a 28 from anywhere…

  • @sonnguyen-zj3hd
    @sonnguyen-zj3hd 2 года назад +5

    This helped me a lot to study with my test! Ty for your videos sir!

  • @conservativeimport4567
    @conservativeimport4567 3 года назад +5

    Thank you! I’m testing as well and this helped me as well

  • @lettyserujo4796
    @lettyserujo4796 Год назад +1

    Thank you so much, I love all of your videos. They have been so instrumental. Thank you again!!

  • @Editsformichelle
    @Editsformichelle Год назад +2

    Hello thank you so much for posting this video!! It helps a lot of students like me who didn't understand what the teacher explained or forgot how to solve it !! Ty so much for posting this its a lot of help!❤

  • @CharlieLPost
    @CharlieLPost 3 года назад +4

    Thanks Mr.J you bail me out every time I dont know something in school. Thank you

  • @principekhan3132
    @principekhan3132 Год назад

    thank you for these videos I'm coming up on a mock test and it really helps

  • @xenmoncus8811
    @xenmoncus8811 2 года назад +3

    About to take my math exam tomorrow, thank you for this.

  • @user-gt8tz4nw7k
    @user-gt8tz4nw7k 10 месяцев назад +2

    your explanation is very simple , thank you ! 🥰

  • @raedaljlaoud9340
    @raedaljlaoud9340 5 месяцев назад

    istg i needed this for a final and you explained it better than anyway and in only 6 minutes you are the best teacher

  • @thedonmekulio2309
    @thedonmekulio2309 3 года назад +6

    Isn’t number 2.) 12.56 tho?

  • @4liferr93
    @4liferr93 3 года назад +9

    4:58
    he said 'hundredths', then said and wrote 'cm', but the unit of that circle was in ft.
    this helped, thank you

    • @airdrie0
      @airdrie0 Год назад +1

      Yes, helps students if the solutions are correct!

    • @user-xj8fz1dk5i
      @user-xj8fz1dk5i 2 месяца назад

      True

  • @BloxyyCube
    @BloxyyCube 8 месяцев назад +1

    I learnt this at school but didnt quite understand it, this helped alot!

  • @022_jel
    @022_jel 2 года назад

    All the other videos were confusing me
    I look at this and was like "wow I didn't know it was this easy"
    THANKS :)

  • @zomgoat5333
    @zomgoat5333 5 месяцев назад

    Thanks Mr J. I was sick and didn't go to school and missed this so the video is really helpful

  • @ligma2337
    @ligma2337 3 года назад +9

    Thank you!! My school now isnt good at helping me learn this and it helped me!!

    • @olganmg5407
      @olganmg5407 3 года назад

      how ..

    • @sugurruu
      @sugurruu 2 года назад +3

      @@olganmg5407 everyone has ways to learn. the school may have only been teaching 1 way that wasn't easy to learn for them.

  • @padipi.207
    @padipi.207 11 месяцев назад +1

    This man is god bro .. best math teacher in the entire world fr . I will sleep in my class during maths period but mr J's class 🥹💗! You're the best teacher ! Keep going brother

  • @drhackk
    @drhackk 3 года назад +4

    Thanks king, needed this

  • @saintgarden2232
    @saintgarden2232 2 года назад +2

    You helped me so much! You’re the best!

  • @enochleelee9972
    @enochleelee9972 27 дней назад

    Thank You So Much
    One RUclips Search Always Helps Me More Than The Teacher ❤

  • @akiciacarlab.nessia6967
    @akiciacarlab.nessia6967 3 года назад +2

    Hey that was very halpful after a long time repeating the video I finally got it thaxs!,!!!😃

  • @jellyidk5681
    @jellyidk5681 Год назад

    I needed this for hw, missed the lesson, thanks so much

  • @hassanajfan2112
    @hassanajfan2112 2 года назад +6

    you literally saved me from my exams, i wish you were my class teacher

  • @shizue_inatori4559
    @shizue_inatori4559 Год назад

    omg ty, I had to relearn this because it slipped my mind after awhile.
    I have a GED test to take tomorrow and this really is saving me.

  • @GORDO_XYZ
    @GORDO_XYZ 2 года назад

    Really helpful. Thanks!!!

  • @itsariannamm
    @itsariannamm 7 месяцев назад +2

    Thank. U so much for this, my 7th grade math teacher DOES NOT know that we JUST came out of 6th and we need to deep defitions about certain things especially the kids in my class so thank u so much for teaching this to me

    • @guillermobritos4262
      @guillermobritos4262 5 месяцев назад

      FOR REAL IM IN 7TH TOO! bro like when i got into 7th grade my teachers didnt even tell me what Pi is or anything like diamter or circumference

  • @itsnorastoca
    @itsnorastoca 6 месяцев назад +1

    Hi sir, thanks so much! You always help me whenever I have difficulty problems with my work! You just earned a new subscriber 😊❤

  • @homelessclay7650
    @homelessclay7650 Год назад +1

    this is so help full I have adhd and this really helped because I was able to concentrate well

  • @coconutshampoo4254
    @coconutshampoo4254 3 года назад +4

    When do you round them? Is it only when you have decimals?

  • @kurtandrei9640
    @kurtandrei9640 2 года назад

    Saving my math grades since 2nd grade thanks!

  • @AbigailsUniverse
    @AbigailsUniverse 3 года назад +31

    Rn I’m on. A zoom and I was so confused about the thing we had been learning for months cuz my notes were ruined! I am doing an assignment and this is SO helpful
    Thx so much

  • @KayKay-ts2cj
    @KayKay-ts2cj 2 года назад +3

    90% understand😭😭😭den watch it over and over I finally got it ... Ty🙃

  • @veronjoachimpierterz2655
    @veronjoachimpierterz2655 Год назад

    Wow this was so easy. Thanks a ton!

  • @brendawilder9018
    @brendawilder9018 3 года назад +8

    Thank you Mr. J. This is a big help. One thing I have a question about is, why did you round to the hundreths place ? Is this a rule when finding the area of a circle?

    • @blondorrainbow9959
      @blondorrainbow9959 Год назад +2

      No it’s just that pi has never ending digits so he just rounds it to the hundredths place

    • @Bubby.23
      @Bubby.23 4 месяца назад

      I think you were a little late🔥

  • @karissajackson355
    @karissajackson355 4 года назад +45

    Thank you so much this helps me with my grades. I look at your videos everyday and it helps thank you so much!😊

    • @MathwithMrJ
      @MathwithMrJ  4 года назад +10

      That is awesome to hear! So glad the videos help. Thanks so much for watching.

    • @WouldYouRatherOriginals
      @WouldYouRatherOriginals 4 года назад +3

      ruclips.net/video/RP3rkMpwRYI/видео.html

  • @1REN1C
    @1REN1C 2 года назад +2

    Thank u I’m homeschooled and my school program didn’t explain anything. This helped sm..

  • @literallyjustkylie3490
    @literallyjustkylie3490 2 года назад

    Thanks so much this really helps me!

  • @lebronjadebelmonte
    @lebronjadebelmonte Год назад

    THANK YOU for helping me this will be helpful in my exam tomorrow.

  • @unknownqq
    @unknownqq 3 года назад +2

    thankyou man hopes it helps me in my exams too

  • @nancymach5437
    @nancymach5437 Год назад

    Mr. J I'm trying to figure out the area for a triangle that has semi-circle on all three sides. The triangle has 4 1/2 in. the semi-circles each are 5 in. Can you help me. Thank you for your time Nancy

  • @Gengsta10
    @Gengsta10 2 месяца назад

    Tysm mr J i really learnes a lot math from you! 😁

  • @kevonstewart8914
    @kevonstewart8914 3 года назад +1

    Best teacher and thank you 🙏🙏🙏👍👍

  • @amancheema0639
    @amancheema0639 2 года назад +4

    for number 3 was it supposed to be ft squared, as 50.27ft sqaured, instead you put cm squared

  • @ktm685
    @ktm685 3 года назад +3

    Bro you help me so much!!

  • @Thisisgonnabemyname
    @Thisisgonnabemyname 4 месяца назад

    Tysm!! I have a selective test and I need to know all about pi, thanks!

  • @ushasrinekkala8625
    @ushasrinekkala8625 9 месяцев назад +1

    Thank you sir for your explaination

  • @gigipenado6810
    @gigipenado6810 4 года назад +11

    i got very different answers think that that is wrong or my calculator is messed up?????!

    • @ash-de1qc
      @ash-de1qc 3 года назад

      i got some too-

    • @jonasw2265
      @jonasw2265 3 года назад +1

      You probably squared the number you got AFTER multiplying the radius by pi. you need to square the radius before multiplying it by pi.

  • @glenlancian323
    @glenlancian323 Год назад

    Thanks that is a big help in my test or assignment

  • @wilbard6708
    @wilbard6708 2 года назад +3

    One small comment how do you get cm squared when the measurement is in feet in problem #3?

  • @jazmine12398
    @jazmine12398 2 года назад

    Tysm sir my homework was due today and it really helped😊

  • @ednaanderson3504
    @ednaanderson3504 Год назад +11

    Hi sir... i love your videos i easilly start to understand my work that i thought was impossible. I am preparing for my exams and this video helped me alot!!!
    My point is .... thank you 😊

  • @Amilton5solas
    @Amilton5solas 2 года назад

    Thanks so much
    I’m refreshing my memory to apply for the plumbing union

  • @rickyrichard2069
    @rickyrichard2069 Год назад

    Thanks man i really needed this

  • @elyssalang1896
    @elyssalang1896 4 года назад +29

    You have the best videos, thank you so much! You truly are saving me during distance learning! :)

  • @hagoskesete2117
    @hagoskesete2117 3 месяца назад

    This helped a lot i have a quiz tm and it made mire more sense 😊

  • @daisystuff1323
    @daisystuff1323 3 года назад +1

    this was really helpful thank u so much I hope u don't mind if I share this vid.

  • @f.santiago6878
    @f.santiago6878 2 года назад +2

    Why for number 3 did you put units as cm instead of ft?

  • @Rupash-ge6iw
    @Rupash-ge6iw 3 месяца назад

    Thanks J you might be the reason I can ace my selective test 🎉🎉❤❤

  • @lele6124
    @lele6124 Год назад

    Thanks bro I needed this I have a test tomorrow

  • @livashini3233
    @livashini3233 2 года назад

    thank you.. this helps me so much :)

  • @Daniel-sr9kx
    @Daniel-sr9kx Год назад

    Thank you so much my homework was due in 5 mins and this saved me

  • @spooktspeek
    @spooktspeek 4 года назад +6

    *_uuuuuuggHHHHH_*
    these videos make me feel so dense- i just wanna do quarantine in peace without work --

    • @hazard6433
      @hazard6433 4 года назад +1

      pansi the waffle 2 same here bub

  • @luckipuppi5076
    @luckipuppi5076 Год назад +5

    Thank you for the video, actually for all of your videos. I have a question though. Why is the answer to the third circle in cm, not feet when the radius is 4ft? Please clear up this confusion for me.

    • @ChessPotato49
      @ChessPotato49 Год назад

      Because they labeled it as cm not in so then it would be for cm instead of in if that makes any sense

    • @airdrie0
      @airdrie0 Год назад +1

      Because he gave the wrong answer!

  • @mercy-mae8682
    @mercy-mae8682 2 года назад

    thank you this really helped 😁

  • @sonny4577
    @sonny4577 4 месяца назад

    this the best teacher my teacher takes multiple days to teach his 6 minute lesson

  • @ffucci
    @ffucci Год назад

    Your channel is so helpful

  • @0yngkr03
    @0yngkr03 Год назад +5

    Im in 6th grade and im hella scared for 7th grade cuz ik it will be harder than this😭

    • @annaharderdick334
      @annaharderdick334 Год назад

      Same 😢

    • @user-tk8ev8xz9s
      @user-tk8ev8xz9s 2 месяца назад

      Same brooo but that was a year ago sooo how is it😂

    • @Dark.20085
      @Dark.20085 2 месяца назад

      Trust me when I say it gets harder

    • @user-qm6hh6kg2t
      @user-qm6hh6kg2t 2 месяца назад

      I am grade 5 and we already lessoned this and it's really hard

    • @0yngkr03
      @0yngkr03 2 месяца назад

      ​@@Dark.20085 Im now in the 8th grade and i guess it was just ok. it wasnt hard and wasnt easy😂

  • @user-ed7tc6jt2e
    @user-ed7tc6jt2e Год назад +2

    Thank so much😊😊 this help me with my grades because tomorrow iw my final exam😊

  • @Unitedstatesofthejohns
    @Unitedstatesofthejohns 5 месяцев назад

    Thank you so much you got my grades up to A's I gotta tell my teacher adt you

  • @thebigboi805
    @thebigboi805 Год назад

    thank you i was having big problems with this

  • @arunahussani9664
    @arunahussani9664 2 года назад

    this helped soooooo much thank you

  • @trollynoob
    @trollynoob 3 месяца назад

    man i like this teacher he is so calm and entertaining just like mathantics

  • @ayrahzhra
    @ayrahzhra 3 года назад +2

    Is it okay if I do not round it to the nearest 100ths?

  • @masifkhan2094
    @masifkhan2094 Год назад

    Wow all the figures area i have learned from you.Thank you sir i have liked you and subscribe.

  • @user-vt8ij2te2p
    @user-vt8ij2te2p 3 месяца назад +1

    I’m only in 4th grade and I understand this. Great way to teach

  • @johnlopez2475
    @johnlopez2475 9 месяцев назад +1

    on problem #3 , why did you use cm for your answer and not ft.?

  • @celticfan2268
    @celticfan2268 Год назад

    Thank you this helped alot👍

  • @zori7104
    @zori7104 Год назад

    So just wondering do you times pie by the radius

  • @Bavinshakhawanlateef
    @Bavinshakhawanlateef 2 года назад

    Tysm my final exam is tomorrow and the video made it so easier

  • @B3COMING-Christlike
    @B3COMING-Christlike 3 года назад +3

    Because of you I got five more points on my test than i should've!!!!!!!!

  • @Vib3WithL3ah
    @Vib3WithL3ah Год назад +1

    Dude fr teach better that my math teacher. ( no joke ) Her lessons are abt 1 hr and 15 mins and this guy taught me it in 6 🤩

  • @emilyinsco
    @emilyinsco 3 года назад

    Thank you so much :)

  • @Lamoyaa
    @Lamoyaa 3 года назад +6

    Tysssssm I've been struggling with this because my teachers taught it online and I was clueless and when I watched this the first time I still didn't know what to do but I watched it again and my brain was like ah yes I see it now 😂 😅 ty again ✨

  • @shaniquabarnes-ky9qi
    @shaniquabarnes-ky9qi Месяц назад

    love these videos keep it up

  • @gabriellalaguerre-yd6jt
    @gabriellalaguerre-yd6jt Год назад

    Omg tysm I have a state test in 25 days and I want an art class so this will help

  • @ist_catus
    @ist_catus Год назад

    Thank you!

  • @macanthonyramos4013
    @macanthonyramos4013 2 года назад

    Thank this video was helpful

  • @phoenixlegend532
    @phoenixlegend532 2 года назад

    Thx very much ur the best teacher

  • @thabisilethango4768
    @thabisilethango4768 8 месяцев назад

    Im definetly gonna pass this exam, thanks Mr.J

    • @user-ps8kh6gc5z
      @user-ps8kh6gc5z 7 месяцев назад

      Sorry but the whole video is wrong

  • @kevonstewart8914
    @kevonstewart8914 3 года назад

    Thank you so much sir

  • @melieflynn-hayes7996
    @melieflynn-hayes7996 Год назад

    Thanks for this i struggle with finding the area of pie.

  • @Chris-zw6qh
    @Chris-zw6qh Год назад +3

    Mr. J has saved me from several bad grades. Props to you Mr. J.