Write the Area of a circle formula and solve for r.
The formula for the area of a circle is A = πr^2, where A is the area and r is the radius.
To solve for r, we can rearrange the formula to solve for r:
A = πr^2
r^2 = A / π
r = √(A / π)
So, the radius of a circle is given by the square root of the area divided by π.