Question

In a hospital used water is collected in a cylindrical tank of diameter 2 m and height 5 m. After recycling this water is used to irrigate a park of hospital whose length is 25 m and breadth is 20 m. If tank is filled completely then what will be the height of standing water used for irrigating the park.

Answer 1

Volume of water in cylindrical tank = Volume of water in park

22/7 x 1 x  1 x 5 = 25 x 20 x h

where, h is the height of standing water

h = 11/350 m

= 22/7 cm

Detailed Answer : 

Diameter of cylinder (d) = 2 m 

Radius of cylinder (r) = 1 m 

Height of cylinder (H) = 5 m