A cylindrical tank has a height of 40 cm and a diameter of 70 cm. How many litres of water can it hold?

(1000 cu cm = 1 litre)

Let the base radius be ‘r’ and height be ‘h’ and diameter be ‘d’

⇒ Given that d= 70cm

∴ r = 35cm

and h = 40cm

⇒ Volume of cylinder V= Area of circle at bottom × height

But, given that

The tank can hold 154 litres of water.

Ans. 154 l