Question

How many liters of water a hollow right circular cylinder of radius 1m and height 7m can hold ?

Answer 1

Litres of water it can hold = Volume of it

Volume = pi(radius)^2 * h

22/7 * ( 7 m) ^ 2 * 1 m

= 154 m3

= 154000 Liters

It can hold 154000 Liters of water

Answer 2

Amount of water which the pipe can hold is equal to the volume of the pipe.
Volume of a cylinder is Πrrh.
r=1 h=7.
volume of the pipe is 22/7×1×1×7 =22m^3.
Amount of water which it can hold is 22×1000.
= 22000litres