Question

The area of a circle is 28.26 square yards. what is the circle's circumference? a=28.26 yd2

Answer 1

`area \: = \pi {r}^(2) \\ circumference = 2\pi \: r`
where r = radius

`\pi {r}^(2) = 28.26 \: {yd}^(2) \\ {r}^(2) = 28.26 / \pi \\ {r}^(2) = 8.99 = 9 \\ \sqrt{ {r}^(2) } = r = √(9) = 3`
circumference = C

`c = 2\pi \: r = 2(3) * \pi \\ = 18.85 \: yd = 18.9 \: yd`

Answer 2

Explanation:

its 18.84