238.64=3.14r^2

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Solution for 238.64=3.14r^2 equation: 


Simplifying
238.64 = 3.14r2

Solving
238.64 = 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.
238.64 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
238.64 + -3.14r2 = 0.00

Add '-238.64' to each side of the equation.
238.64 + -238.64 + -3.14r2 = 0.00 + -238.64

Combine like terms: 238.64 + -238.64 = 0.00
0.00 + -3.14r2 = 0.00 + -238.64
-3.14r2 = 0.00 + -238.64

Combine like terms: 0.00 + -238.64 = -238.64
-3.14r2 = -238.64

Divide each side by '-3.14'.
r2 = 76

Simplifying
r2 = 76

Take the square root of each side:
r = {-8.717797887, 8.717797887}

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