113.0=3.14r^2

Solution for 113.0=3.14r^2 equation:

Simplifying
113.0 = 3.14r2

Solving
113.0 = 3.14r2

Solving for variable 'r'.

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

Add '-3.14r2' to each side of the equation.
113.0 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
113.0 + -3.14r2 = 0.00

Add '-113.0' to each side of the equation.
113.0 + -113.0 + -3.14r2 = 0.00 + -113.0

Combine like terms: 113.0 + -113.0 = 0.0
0.0 + -3.14r2 = 0.00 + -113.0
-3.14r2 = 0.00 + -113.0

Combine like terms: 0.00 + -113.0 = -113
-3.14r2 = -113

Divide each side by '-3.14'.
r2 = 35.98726115

Simplifying
r2 = 35.98726115

Take the square root of each side:
r = {-5.998938335, 5.998938335}