Surface Area of a Square Pyramid | Math with Mr. J
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- Опубликовано: 27 июн 2021
- Welcome to Surface Area of a Square Pyramid with Mr. J! Need help with finding the surface area of a pyramid? 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 help with how to find the surface area of a square pyramid. Mr. J will go through a surface area of a square pyramid example and explain the steps of how to find the surface area of a pyramid.
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.
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Hopefully this video is what you're looking for when it comes to calculating the surface area of a square pyramid.
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✅ Something to keep in mind... Adding the area of the base and the areas of all the lateral faces will work for any pyramid. The formula (SA = B + 1/2 x p x s) that is mentioned in the video only works for regular pyramids though (regular = all sides of the base are the same). For example, it works for square pyramids because all of the lateral faces are the same. For a counter example, this formula does not work for a rectangular pyramid because all of the lateral faces are not the same.
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I’m failing because of triangular prisms grad 8
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@@nejihyuga2517 I’m in grade 6. I’m in an extended program so I’m learning 8th grade math right now. This is super confusing
@@nejihyuga2517 me grade 6 and learning about all surfaces areas
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quick question , why does most of the numbers picked by you is usually lesser than 20 inches more spefically in the single digits ? is it some sort of reference ?
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I have been struggling with finding the area of the pyramid but now I know! Thanks Mr.J 👍
Thank you!
it can be also
L.A
A= 6 in × 5 in
= 30 in² ÷2
= (15 in²) 4 (lateral face)
= 60 in²
BASE
A= 6 in × 6 in
= 36 in²
S.A= 60 in² + 36 in²
= 96 in²
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I still dont seem to understand
Yeah, cause you're slow
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Do you have a video that shows hot to get the smallest surface area of a pyramid?
I hope for you to pass 1 Million sub (good luck)
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BOTH METHODS VERY HELPFULL THANK YOU MR.JAY as soon as i came across your videos they have been super helpful . on April 21-24 im finna take 7th grade milestones so im studying. i really appreciate these videos and now im actually better at surface area i had previously before your videos struggled with SA but now im better
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What are you gonna do when the apex is given? I'm a little confused.
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how to find the area of a cylinder please tell
This was the exact same problem as on my program -- School Yourself...
Sorry MrJ, 5 is the slant height not height of the triangle. by pythagoras theorem, slant height 5 is hypotenuse of triangle with base 6, in this case we'll take it as 3 ,
then height will be h^2=5^2-3^2 =25-9=16,
h =√16=4.
then, area of one triangle will be =1/2×6×4=12.
area of 4 triangle=4×12=48.
now total surface area= 36+48=84 unit^2
Yeah, but it’s still a surface. It would be useful to find the height if you are trying to do volume, but not necessary for surface area.
Thank you Mr. Jay! You help me with my math so much!
The slanted height is not the same as regular height. You need to use Pythagorean theory to actually find the height.
Excuse but where did you get 15 from?
I have a quiz thnx
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my teacher show me to do l x w x h then divide by three
It's wrong the answer is 213.52in because 68x3.14=213.520but as u said it was slightly different
Im sorry but how did you get 36? Why did you do 6×6? Please reply my test is tomorrow I beg Mr.J
That because area is length *height. Here both length and height are 6 so id we multiply it we get 36
The area of square i mean
@@AlanMathew-sw6gwWhy wouldn’t it be 6+6+6+6? If the square has 4 6in sides?
Third
I thought the formula was SA= 4 (1/2 bh) + S exponent 2
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