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Question

The number of balls of radius 1 cm that can be made from a solid sphere of radius 4 cm is

A
64
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B
16
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C
12
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D
4
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Solution

The correct option is B 64
Radius of sphere, R=4 cm
Radius of ball, r=1 cm
Volume of sphere V1=43πR3 = 43π(4)3
Volome of ball V2=43πr3 = 43π(1)3
Number of balls that can made are =V1V2=43π(4)343π(1)3
=43
=64

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