Volume of sphere

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Q. A solid spherical ball of radius 4cm is melted to form spheres of radius 2cm each. The number of spheres so formed is
a) 8
b) 9
c) 10
d) 16



Answer: a

Volume of sphere is (4/3)πr. So, Volume is directly proportional to cube of radius.
r13 = x * r23, where r1 = 4 and r1 = 2. Substituting these values we get x=8.

Itachi443

Some say he’s half man half fish, others say he’s more of a seventy/thirty split. Either way he’s a fishy bastard.

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