Answer:
r = √(A/π)
Substitute area into "A", then solve:
Divide A by π, then find the square root of that number.
Explanation:
With the area of a circle, you can find the radius by rearranging its formula.
Area of a circle: A = πr²
<u>Rearrange the formula to isolate "r"</u>.
A = πr²
A/π = πr²/π Divide both sides by π
A/π = r² π divided by π cancels out on the right
√(A/π) = √r² √ both sides to cancel out ²
√(A/π) = r Write "r" on the left for standard formatting
r = √(A/π) Formula for find radius
If you have the area, use this formula.
- Substitute "A" with the area.
- Divide A by π
- Find the square root of that number
