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How many iron balls, each of radius 1 cm, can be made from a sphere whose radius is 8 cm?
1. 64
2. 256
3. 512
4. 124

1 Answer

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Correct Answer - Option 3 : 512

Calculation:

Number of spheres of radius 1 cm = (volume of a sphere of radius 8 cm)/volume of one sphere of radius 1 cm)

Number of spheres of radius 1 cm = (4/3 × π × 83)/(4/3 × π × 13) = 83 

Number of spheres of radius 1 cm = 512

Total 512 spheres can be made from a sphere of radius 8 cm.

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