60.790401=3.14*r^2

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Solution for 60.790401=3.14*r^2 equation: 


Simplifying
60.790401 = 3.14r2

Solving
60.790401 = 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.
60.790401 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
60.790401 + -3.14r2 = 0.00

Add '-60.790401' to each side of the equation.
60.790401 + -60.790401 + -3.14r2 = 0.00 + -60.790401

Combine like terms: 60.790401 + -60.790401 = 0.000000
0.000000 + -3.14r2 = 0.00 + -60.790401
-3.14r2 = 0.00 + -60.790401

Combine like terms: 0.00 + -60.790401 = -60.790401
-3.14r2 = -60.790401

Divide each side by '-3.14'.
r2 = 19.36000032

Simplifying
r2 = 19.36000032

Take the square root of each side:
r = {-4.400000036, 4.400000036}

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