A cylindrical bucket, 28 cm in diameter and 72 cm high, is full of water. The water is emptied into a rectangular tank, 66 cm long and 28 cm wide. Find the height of the water level in the tank.
Given,
Diameter of cylindrical bucket = 28 cm
Radius of bucket = 
Height of bucket = 72 cm
Volume of water in bucket = πr2h = 
Length of rectangular tank = 66 cm
Width of tank = 28 cm
Let rise in water level in rectangular tank = h cm
∵ Volume of cylinder = Volume of rectangular tank
= 66 × 28 × h
⇒ h = 
14