Question

I need help please!

Picture below

Answer 1

The correct answer would be A

Answer 2

The answer is A

Explanation:

A * 2 = 1/2πr^2 * 2

2A / π = πr^2 / π

`\sqrt{(2a)/(\pi ) }`=
`√(r^2)`

So, the answer is A because r =
`\sqrt{(2a)/(\pi ) }`