Sarthaks Test
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A spherical ball of radius 3cm is melted and recast into three spherical balls. The radii of the two of balls are 1.9cm  and 2cm. Determine the diameter of the third ball?

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We know that Volume of a sphere = 4/3πr3

So its volume (v)=4/3π(3)3

Given that ball is melted and recast into three spherical balls

Radii of third ball are 1.9cm  and 2cm

Volume of spherical ball is equal to volume of 3 small spherical balls

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