301.44=3.14*r^2

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Solution for 301.44=3.14*r^2 equation: 


Simplifying
301.44 = 3.14r2

Solving
301.44 = 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.
301.44 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
301.44 + -3.14r2 = 0.00

Add '-301.44' to each side of the equation.
301.44 + -301.44 + -3.14r2 = 0.00 + -301.44

Combine like terms: 301.44 + -301.44 = 0.00
0.00 + -3.14r2 = 0.00 + -301.44
-3.14r2 = 0.00 + -301.44

Combine like terms: 0.00 + -301.44 = -301.44
-3.14r2 = -301.44

Divide each side by '-3.14'.
r2 = 96

Simplifying
r2 = 96

Take the square root of each side:
r = {-9.797958971, 9.797958971}

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