The spherical ball of lead 3 cm in diameter is melted and recast into 3 spheric

Question

The spherical ball of lead 3 cm in diameter is melted and recast into 3 spherical balls. The diameters of two of these are 1 ½ cm and 2 cm respectively. The
diameter of third ball is?

Options:

A . 2.66 cm

B . 2.5 cm

C . 3 cm

D . 3.5 cm

Answer: Option B

4/3 Ï€ * 3 * 3 * 3 = 4/3 Ï€[(3/2)³ + 2³ + r³]

r
= 1.25

d
= 2.5

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