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Q.
If a solid sphere of radius 10 cms is moulded into 8 spherical solid balls of equal radius, then surface area of each ball (in sq.cm) is ?
A.
100 π
B.
101/π
C.
99 π/12
D.
54/13π
View Answer
Correct choice: A
Explanation:
4/3 π x 10 x 10 x 10 = 8 x 4/3 π x r x r x r r = 5 4π x 5 x 5 = 100π
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