0=r^2-53.29

Solution for 0=r^2-53.29 equation:

Simplifying
0 = r2 + -53.29

Reorder the terms:
0 = -53.29 + r2

Solving
0 = -53.29 + 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.
0 + -1r2 = -53.29 + r2 + -1r2
Remove the zero:
-1r2 = -53.29 + r2 + -1r2

Combine like terms: r2 + -1r2 = 0
-1r2 = -53.29 + 0
-1r2 = -53.29

Divide each side by '-1'.
r2 = 53.29

Simplifying
r2 = 53.29

Take the square root of each side:
r = {-7.3, 7.3}