Question

calculate the circumference of a beach ball whose air capacity is 22.7L. round the final answer to the nearest tenth of a metre.

Answer 1

1 L is almost identical to 1000 cm³ 
A sphere with a volume of 22700 cm³ would have a radius of 17.565 cm (rounded). 
This would give a circumference of 110 cm, or 1.1 meters.