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For a sphere of radius 10 cms. the numerical value of the surface area is how many per cent of the numerical value of its volume ?
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- 24%
- 26.5%
- 30%
- 45%
Correct Option: C
Surface area sphere = 4π x (10)2
volume sphere=4π/3 x (10)3
= (4000π/3) cm3
∴ Required percentage = {(400π x 3) / (4000π)} x 100 %
= 30%
