Question

A small swimming pool is 20ft long, 10ft wide and 5m deep. What is the volume in cubic meters?         

Answer 1

1 ft is 0.3048 m, so, 20 ft is 6.096 m, 10 ft is 3.048 m, 5 ft is 1.524 m. So, the volume is

$$V=abc=6.096·3.048·1.524=28.32\text{ m}^3.$$