-
The portion of a ditch 48m long, 16.5 m wide and 4 m deep that can be filled with stones and earth available during excavation of a tunnel, cylindrical in shape, of diameter 4 m and length 56 m is (Take π = 22/7)
-
-
1 Part 4
-
1 Part 2
-
2 Part 9
-
1 Part 9
-
Correct Option: C
Volume of earth and stones taken out from the tunnel = πr²h
| = |  | × 2 | × | 2× 56 |  | cu.metre. | |
| 7 |
= 704 cu. metre
Volume of ditch = (48 × 16.5 × 4) cu. metre = 3168 cu. metre
| ∴ Part of ditch filled = | = | parts | ||
| 3168 | 9 |
