118.81=r^2

Solution for 118.81=r^2 equation:

Simplifying
118.81 = r2

Solving
118.81 = r2

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-1r2' to each side of the equation.
118.81 + -1r2 = r2 + -1r2

Combine like terms: r2 + -1r2 = 0
118.81 + -1r2 = 0

Add '-118.81' to each side of the equation.
118.81 + -118.81 + -1r2 = 0 + -118.81

Combine like terms: 118.81 + -118.81 = 0.00
0.00 + -1r2 = 0 + -118.81
-1r2 = 0 + -118.81

Combine like terms: 0 + -118.81 = -118.81
-1r2 = -118.81

Divide each side by '-1'.
r2 = 118.81

Simplifying
r2 = 118.81

Take the square root of each side:
r = {-10.9, 10.9}