27=r^2

Solution for 27=r^2 equation:

Simplifying
27 = r2

Solving
27 = 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.
27 + -1r2 = r2 + -1r2

Combine like terms: r2 + -1r2 = 0
27 + -1r2 = 0

Add '-27' to each side of the equation.
27 + -27 + -1r2 = 0 + -27

Combine like terms: 27 + -27 = 0
0 + -1r2 = 0 + -27
-1r2 = 0 + -27

Combine like terms: 0 + -27 = -27
-1r2 = -27

Divide each side by '-1'.
r2 = 27

Simplifying
r2 = 27

Take the square root of each side:
r = {-5.196152423, 5.196152423}