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CBSE . . Class VIII, IX and X . . . math and science
1) Olympiad . . . . 2 equilateral triangle. Find pink triangle area. #ClassIX #circles
#Class IX #Math #CBSE #olympiad Ch:9 Circle
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26) A heap of wheat is in the form of a cone whose diameter is 10.5m & height is 3m. Find its volume
Просмотров 18914 дней назад
#Class IX #Math #CBSE #NCERT Ch:7 Triangles 9. A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required.
25) If the triangle ABC in the Q. 7 above is revolved about the side 5cm, then find volume of solid.
Просмотров 7414 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 Surface area and volume 8. If the triangle ABC in the Question 7 above is revolved about the side 5 cm, then find the volume of the solid so obtained. Find also the ratio of the volumes of the two solids obtained in Questions 7 and 8.
24) A right triangle ABC with sides 5cm, 12cm & 13cm is revolved about the side 12cm. Find volume
Просмотров 7414 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 surface area and volume Ex: 11.3 7. A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm. Find the volume of the solid so obtained.
23) The volume of a right circular cone is 9856 cm3. If diameter of base is 28 cm, find ht of cone
Просмотров 9314 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 surface area and volume 6. The volume of a right circular cone is 9856 cm3. If the diameter of the base is 28 cm, find (i) height of the cone (ii) slant height of the cone (iii) curved surface area of the cone
22) A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres?
Просмотров 5914 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 surface area and volume 5. A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres?
21) If the volume of a right circular cone of height 9 cm is 48 π cm3, find the diameter of its base
Просмотров 4614 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 surface area and volume 4. If the volume of a right circular cone of height 9 cm is 48 π cm3, find the diameter of its base.
20) The height of a cone is 15 cm. If its volume is 1570 cm3, find radius of the base.(Use π = 3.14)
Просмотров 4914 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 Surface area and volume 3. The height of a cone is 15 cm. If its volume is 1570 cm3, find the radius of the base. (Use π = 3.14)
19) Find the capacity in litres of a conical vessel with (i) Radius 7cm, Slant ht 25cm (ii) Ht 12cm
Просмотров 7614 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 Surface area and volume 2) Find the capacity in litres of a conical vessel with (i) Radius 7cm, Slant ht 25cm (ii) Ht 12cm, Slant ht 13cm.
18) Find volume of the right circular cone with (i) radius 6cm, height 7cm (ii) rad 3.5cm, ht 12cm
Просмотров 9314 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 Surface area and volume 1) Find volume of the right circular cone with (i) radius 6cm, height 7cm (ii) rad 3.5cm, ht 12cm
09.11.06 NCERT Ex:11.3 Solution (volume of cone) #Class IX - Ch:11 Surface area &volume
Просмотров 3414 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 Surface area and volume Ex:11.3 09.11.06 NCERT Ex:11.3 Solution (volume of cone) #Class IX - Ch:11 Surface area and volume 1. Find the volume of the right circular cone with (i) radius 6 cm, height 7 cm (ii) radius 3.5 cm, height 12 cm 2. Find the capacity in litres of a conical vessel with (i) radius 7 cm, slant height 25 cm (ii) height 12 cm, slant height 13...
10.14.04 Probability - Three dice are thrown - 6 Qs #Class X #Math #Ch:14
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#Class X #Math #CBSE #NCERT Ch:14 probability 10.14.04 Probability - Three dice are thrown - 6 Qs
10.14.03 Probability - Two dice are thrown - 12 Qs #Class X #Math #Ch:14
Просмотров 2414 дней назад
#Class X #Math #CBSE #NCERT Ch:14 probability 10.14.03 Probability - Two dice are thrown - 12 Qs
17) A right circular cylinder just encloses a sphere of radius r. Find(i) surface area of sphere,
Просмотров 11214 дней назад
#Class IX #Math #CBSE #NCERT Ch:7 Triangles 9. A right circular cylinder just encloses a sphere of radius r (see Fig. 11.10). Find (i) surface area of the sphere, (ii) curved surface area of the cylinder, (iii) ratio of the areas obtained in (i) and (ii).
16) A hemispherical bowl is made of steel, 0.25 cm thick. Inner radius of bowl is 5 cm. Find outer
Просмотров 9314 дней назад
#Class IX #Math #CBSE #NCERT Ch:11 surface area and volume Ncert Ex:11.2 8) A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5 cm. Find the outer curved surface area of the bowl.
15) The diameter of the moon is approximately one fourth of the diameter of the earth. Find ratio
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15) The diameter of the moon is approximately one fourth of the diameter of the earth. Find ratio
14) Find the radius of a sphere whose surface area is 154 cm2. #Class IX #surfaceareaandvolume
Просмотров 10214 дней назад
14) Find the radius of a sphere whose surface area is 154 cm2. #Class IX #surfaceareaandvolume
13) A hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin-plating it
Просмотров 10014 дней назад
13) A hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin-plating it
12) Radius of spherical balloon increases from 7cm to 14cm as air is being pumped in it. Find ratio
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12) Radius of spherical balloon increases from 7cm to 14cm as air is being pumped in it. Find ratio
11) Find the total surface area of a hemisphere of radius 10cm. #surfaceareaandvolume
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11) Find the total surface area of a hemisphere of radius 10cm. #surfaceareaandvolume
10) Find the surface area of a sphere of diameter: (i) 14cm (ii) 21cm (iii) 3.5m. #Class IX
Просмотров 4114 дней назад
10) Find the surface area of a sphere of diameter: (i) 14cm (ii) 21cm (iii) 3.5m. #Class IX
9) Find the surface area of a sphere of radius: (i) 10.5 cm (ii) 5.6 cm (iii) 14 cm #Class IX
Просмотров 12014 дней назад
9) Find the surface area of a sphere of radius: (i) 10.5 cm (ii) 5.6 cm (iii) 14 cm #Class IX
10.14.02 Probability - Single dice is thrown - 10 Qs #Class X #Math #Ch:14
Просмотров 2514 дней назад
10.14.02 Probability - Single dice is thrown - 10 Qs #Class X #Math #Ch:14
09.11.04 NCERT Ex:11.2 Solution #Class IX - Ch:11 Surface area and volume
Просмотров 5214 дней назад
09.11.04 NCERT Ex:11.2 Solution #Class IX - Ch:11 Surface area and volume
8) A bus stop is barricaded from remaining part of road, by using 50 hollow cones made of recycled.
Просмотров 11321 день назад
8) A bus stop is barricaded from remaining part of road, by using 50 hollow cones made of recycled.
6) The slant height and base diameter of a conical tomb are 25m and 14m respectively. Find the cost
Просмотров 5621 день назад
6) The slant height and base diameter of a conical tomb are 25m and 14m respectively. Find the cost
7) A joker’s cap is in form of a right circular cone of base radius 7cm & height 24cm. Find area of
Просмотров 8121 день назад
7) A joker’s cap is in form of a right circular cone of base radius 7cm & height 24cm. Find area of
5) What length of tarpaulin 3m wide will be reqd to make conical tent of height 8m &base radius 6m?
Просмотров 14221 день назад
5) What length of tarpaulin 3m wide will be reqd to make conical tent of height 8m &base radius 6m?
4) A conical tent is 10 m high and the radius of its base is 24 m. Find (i) slant height of tent.
Просмотров 10721 день назад
4) A conical tent is 10 m high and the radius of its base is 24 m. Find (i) slant height of tent.
3) Curved surface area of a cone is 308 cm2 & its slant height is 14 cm. Find (i) radius of the base
Просмотров 8921 день назад
3) Curved surface area of a cone is 308 cm2 & its slant height is 14 cm. Find (i) radius of the base
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Sir
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thank you bhaiya tomorrow pt2 exam was starting. Kal maths ka paper hai or ye question nhi samajh me aa rhi thi lekin ye video very support for me thank you so much😊
Thank you bhaiya so much my pt2 exam was starting and i have found your video and solve my doubt once again thank you so much❤❤❤❤
I'm glad I could help! Best of luck on your exam!
@CBSE.classes5632 thank you so much bhaiya
கன அளவு= 1/3 π × (ஆரம்)^2 × உயரம் = 1/3 π×(7×7)×25 கன்.செ.மீ. =1/3×3.14×49×24 கன.செ.மீ//
3 15 se 5 time wrong
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Explanation is very wonderful than other's
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In this question using RHS congruence rule prove that triangle ABC is isosceles triangle
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Tqsm sir....... 🥰
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Thanku sir ❤
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Excellent
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Very simple I love it ❤️
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It was really awesome how u teached
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Can understand the concept very nicely 🎉🎉🎉🎉🎉
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Change the boad the. Color of boad is green
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You are the best teacher😊
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Hii sir
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Sir hindi me samjhado
Nice explanation ❤🎉🎉❤❤
Nice
vol=100.pai sq cm.when pai=22/7.ans
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1×22×5.25×5.25×3/7×3m^3
1)ht of cone=48cm; (2)slant ht of cone=50 cm and (3)csa of cone=2200 sq cm.ans
Sir pai ka man 22/7 sahi nahi hai 22/7=3.1428571428aata hai jab ki math se nikalne par 3.14159268 se .00000000001 jeyadah nahi hosakta paihle pai ka man math se nikalna btao
Ky aap sabit karsakte ho tirbhojh ka tinu kon ka man 180 hota pai ke man 1/2 se natu kam natu jeyadah .0000000001 bhi nahi
ABP and ACP congt by s- angle side axiom.
ABD and ACD congt.by s-s-s axio.
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by s-s-s axiom ABD and ACD are congruent.so <ABD=<ACD(cpct).proved.
210×5.5=1050+105=1155 ans
Ch:11 Surface area and volume ruclips.net/p/PLXRaddUU-c8FjxRE3P3aSBGLyZxW5cS7W
Ch:11 Surface area and volume ruclips.net/p/PLXRaddUU-c8FjxRE3P3aSBGLyZxW5cS7W
Ch:11 Surface area and volume ruclips.net/p/PLXRaddUU-c8FjxRE3P3aSBGLyZxW5cS7W
Ch:11 Surface area and volume ruclips.net/p/PLXRaddUU-c8FjxRE3P3aSBGLyZxW5cS7W
Ch:11 Surface area and volume ruclips.net/p/PLXRaddUU-c8FjxRE3P3aSBGLyZxW5cS7W
Ch:11 Surface area and volume ruclips.net/p/PLXRaddUU-c8FjxRE3P3aSBGLyZxW5cS7W
R=7cm
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tr.ABP and teiangle ACP r congruent byRHS law.thus <B=<C(by cpct)
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22×5.25×10/7=22×10×0.75=7.5×11×2=82.5×2=165 sq is area.ans of csa
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AB=AC.(given) and AD=AD common and <ADB=<ADC=90 By RHS rule triangls ABD and ACD ar congruent =>BD=DC.prvd.
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as <B=<C then measure of both is 45 deg.
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