65. If the capacity of a cylindrical tank is 1848 m3 and the diameter of its base is 14 m, then find the depth of the tank.
A. 21m B.15m
C. 12m D.5m
Answer:
Let the depth of the tank be h metres. Then,
? x 72 x h = 1848 Þ h = (1848 x (7/22) x (1/49) = 12 m
