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Question

How many lead balls, each of radius 1 cm, can be made from a sphere of radius 8 cm?


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Solution

Volume of solid sphere= 43π×r3
43π×8×8×8
volumeofball=43π×r3
=43π×111
numberofballs=43π×8×8×843π×111
=8×8×8
=512

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