Question

150 litres of water are poured into a cylindrical drum of diameter 48 cm.Find the depth of the water in the drum

Answer 1

82.89 cm to the nearest hundredth.

Explanation:

Volume = πr^2h where r = radius, h = height of the water.

r = 1/2 * 48 = 24 cm and the volume = 150 * 100 = 150,000cm^3 (as there are 1000 cm^3 in 1 litre).

So, substituting, we have:

150000 = π*24^2*h

h = 150000/π*24^2

= 82.893 cm