60.79=3.14*r^2

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Solution for 60.79=3.14*r^2 equation: 


Simplifying
60.79 = 3.14r2

Solving
60.79 = 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.
60.79 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
60.79 + -3.14r2 = 0.00

Add '-60.79' to each side of the equation.
60.79 + -60.79 + -3.14r2 = 0.00 + -60.79

Combine like terms: 60.79 + -60.79 = 0.00
0.00 + -3.14r2 = 0.00 + -60.79
-3.14r2 = 0.00 + -60.79

Combine like terms: 0.00 + -60.79 = -60.79
-3.14r2 = -60.79

Divide each side by '-3.14'.
r2 = 19.35987261

Simplifying
r2 = 19.35987261

Take the square root of each side:
r = {-4.399985524, 4.399985524}

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