2013 · Q53
A rectangular field 22 m by 10 m. Two hemispherical pits of radius 2 m are dug and mud spread over remaining field. The rise in level is
Elementary MathematicsMensuration
- A8/93 m
- B13/93 m
- C16/93 m
- D23/93 m
Explanation
Mud volume=(4/3)π×8; area=220−8π... rise=16/93. Answer C.