Volumes Practice Test 1

Question : 24 of 40

Marks: +1, -0

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

Solution:

Let n be the number of balls; then

n×4/3 π . (0.3)^3

4/3 π . 3^3

∴ n =

{27}/{0.027}

= 1000

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