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How many hemispherical balls can be made from a cylinder 56 cm high and 12 cm diameter, when every ball being 0.75 cm in radius?
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- 1792
- 3584
- 4824
- 7168
- 1792
Correct Option: D
Volume of cylinder = πr²h = (π × 6 × 6 × 56) cu. cm.
| Volume of hemi-spherical ball = |  | π × 0.75 × 0.75 × 0.75 |  | cubic unit | |
| 3 |
| ∴ Total number of balls = | ||||
| π × 0.75 × 0.75 × 0.75 | ||||
| 3 | ||||
= 7168
