Question

The area of a circular swimming pool is approximately 18 m2 which is the best estimate of the radius

Answer 1

2.39 meter

Explanation:

Let r be the radius of the circular swimming pool and A be the area of circular swimming pool.

Given.

The area of circular swimming pool is
`18m^(2)`

`A = 18`

The area of circle =
`\pi r^(2)`

`A=\pi r^(2)`-------(1)

Put A value in equation 1.

`18=\pi r^(2)`

`r^(2)=(18)/(\pi )`

Put
`\pi =(22)/(7)` value.

`r=\sqrt{ (18)/((22)/(7) )`

`r=\sqrt{(18* 7)/(22) }`

`r=\sqrt{ (126)/(22) }`

`r=√(5.72)`

`r=2.39mtere`

The radius of the circle is 2.39 meter.