14=3.14r^2

Solution for 14=3.14r^2 equation:

Simplifying
14 = 3.14r2

Solving
14 = 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.
14 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
14 + -3.14r2 = 0.00

Add '-14' to each side of the equation.
14 + -14 + -3.14r2 = 0.00 + -14

Combine like terms: 14 + -14 = 0
0 + -3.14r2 = 0.00 + -14
-3.14r2 = 0.00 + -14

Combine like terms: 0.00 + -14 = -14
-3.14r2 = -14

Divide each side by '-3.14'.
r2 = 4.458598726

Simplifying
r2 = 4.458598726

Take the square root of each side:
r = {-2.111539421, 2.111539421}