Q15 of 22 Page 258

A solid sphere of radius 3 cm is melted and then recast into small spherical balls each of diameter 0.6 cm. Find the number of small balls thus obtained.

Given, radius of solid sphere = r = 3cm

Radius of spherical ball = r’ = 0.3 cm


Let n small balls be formed.


So, n × volume of small spherical ball = volume of solid sphere



n × 0.33 = 33


n = 103


n = 1000.


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