Question

The circumference of a circular pool is 7.8 meters. Find its diameter, rounded to one decimal place.

Answer 1

Given:

a.) The circumference of a circular pool is 7.8 meters.

Recall: The formula for getting the circumference of a circle.

`\text{ Circumference = }\pi d`

Where,

d = diameter of the circle

We get,

`\text{ Circumference = }\pi d`
`\text{ 7.8 m = }\pi d`
`\text{ }\frac{\text{7.8}}{\pi}\text{ m = }d`
`\text{ }\frac{\text{7.8}}{3.14}\text{ m = }d`
`\text{ }2.4840764331\text{ m = }d\text{ }`
`\text{ }2.5\text{ m }\approx\text{ }d\text{ }`

Therefore, the diameter of the circular pool is 2.5 m