Direction: A semi-circular stonearch of thickness 30 cm is provided over an opening in a brick wall. The wall has length 3.0 m, width 30 cm and height 3.0 m. The opening has span 1.0 m and height 2.0 m.
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The quantity of stone work in the semi-circular arch (in cu.m) IS
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- 0.141
- 0.184
- 0.325
- 0.613
Correct Option: B
| π |  | r + |  | × t × 2 | |
| 2 |
| π | | 0.5 + | | × 0.3 × 0.3 = 0.18m³ | |
| 2 |
