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A hemispherical earth mound of 3 meter diameter is proposed to be constructed in a children’s park. If the proportion of soil and sand for the construction is 3:2, the estimated volume of soil in cubic meters is ________
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- 6.15 to 8.30
- 3.15 to 4.30
- 4 to 5
- 4.15 to 4.30
Correct Option: D
4.15 to 4.30
| Volume of sphere is 4 | ||
| 3 |
| Volume of hemisphere = | × | ||
| 2 | 3 |
 |  | = 7.0714 | ||
| 7.1.5.1.5.1.5 |
So, volume of mud = 0.6 × 7.0714 = 4.24 m³
