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
$\pi {r}^{2} = 28.26 \: {yd}^{2} \\ {r}^{2} = 28.26 \div \pi \\ {r}^{2} = 8.99 = 9 \\ \sqrt{ {r}^{2} } = r = \sqrt{9} = 3$
circumference = C
$c = 2\pi \: r = 2(3) \times \pi \\ = 18.85 \: yd = 18.9 \: yd$

Answer 2

Answer:

Step-by-step explanation:

its 18.84