379.94=3.14x(r)x(r)

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Solution for 379.94=3.14x(r)x(r) equation: 


Simplifying
379.94 = 3.14x(r) * x(r)

Multiply x * r
379.94 = 3.14rx * x * r

Multiply rx * x
379.94 = 3.14rx2 * r

Multiply rx2 * r
379.94 = 3.14r2x2

Solving
379.94 = 3.14r2x2

Solving for variable 'r'.

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

Add '-3.14r2x2' to each side of the equation.
379.94 + -3.14r2x2 = 3.14r2x2 + -3.14r2x2

Combine like terms: 3.14r2x2 + -3.14r2x2 = 0.00
379.94 + -3.14r2x2 = 0.00

Add '-379.94' to each side of the equation.
379.94 + -379.94 + -3.14r2x2 = 0.00 + -379.94

Combine like terms: 379.94 + -379.94 = 0.00
0.00 + -3.14r2x2 = 0.00 + -379.94
-3.14r2x2 = 0.00 + -379.94

Combine like terms: 0.00 + -379.94 = -379.94
-3.14r2x2 = -379.94

Divide each side by '-3.14x2'.
r2 = 121x-2

Simplifying
r2 = 121x-2

Take the square root of each side:
r = {-11x-1, 11x-1}

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