Question

The area of a circle is 28.26 in. What is the circumference of that circle?

Answer 1

18.84

Explanation:

the formula to find the area of circle is: `A=pi*r^2`
the area is already stated so,
`28.26=pi*r^2`

`28.26/pi=r^2`
`8.995437=r^2`

`sqrt(8.995437)=r`

`2.999239=r`

we have found that the radius is 2.999239 and the formula for circumference of a circle is: `pi*d`
`2.999239*2=5.99848` (multiply by 2 to get the diameter)

`5.99848*pi=18.84478`

so the answer is 18.84