A sphere has a surface area of 100cm^2. Find it's volume.
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nitibha11:
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Answered by
3
4pir^2 = 100. Now take out the radius. After that put the value of radius in the formula of its volume which is 4/3 pi r^3 the answer is 500/3underroot pi
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8
surface area of sphere = 100 cm^2
4Πr^2 = 100
4×22÷7×r^2 =100
88÷7×r^2 =100
r^2 =100×7÷88
r^2 =700÷88
r =2.8(approximately)
volume of sphere =4÷3 Π{pie}r^3
= 4×22×(2.8)^3 ÷3×7
= 88×21.952÷21
= 91.98(approximately) cm^3
4Πr^2 = 100
4×22÷7×r^2 =100
88÷7×r^2 =100
r^2 =100×7÷88
r^2 =700÷88
r =2.8(approximately)
volume of sphere =4÷3 Π{pie}r^3
= 4×22×(2.8)^3 ÷3×7
= 88×21.952÷21
= 91.98(approximately) cm^3
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