A cistern with a rectangular base 2 m by 1.5 m is 1.2 m deep. It is at present two-thirds full. How many litres of water must be drawn off to leave it exactly one-quarter full?

Question

Accepted Answer

1500. Full capacity = 2 × 1.5 × 1.2 = 3.6 m³ = 3600 litres. Two-thirds of this is 2400 litres and one-quarter is 900 litres. Water to be drawn off = 2400 − 900 = 1500 litres.

A cistern with a rectangular base 2 m by 1.5 m is 1.2 m deep. It is at present two-thirds full. How many litres of water must be drawn off to leave it exactly one-quarter full?

Step-by-Step Solution

Master this topic in 30 minutes a day.

More Areas & Volumes practice