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A spherical lead ball of radius 10cm is melted and small lead balls of radius 5mm are made. The total number of possible small lead balls is (Take π = 22/7)
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- 8000
- 400
- 800
- 125
- 8000
Correct Option: A
| Volume of bigger ball = | πr³ | |
| 3 |
| = | π × 10 × 10 × 10 cu.cm. | |
| 3 |
| Volume of smaller ball = | π(0.5)³ | |
| 3 |
| ∴ Possible number of smaller balls = | π × 10 × 10 × 10 | = 8000 | |
| 3 | |||
| π × 0.5 × 0.5 × 0.5 | |||
| 3 | |||
