60.7904=3.14*r^2

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Solution for 60.7904=3.14*r^2 equation: 


Simplifying
60.7904 = 3.14r2

Solving
60.7904 = 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.
60.7904 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
60.7904 + -3.14r2 = 0.00

Add '-60.7904' to each side of the equation.
60.7904 + -60.7904 + -3.14r2 = 0.00 + -60.7904

Combine like terms: 60.7904 + -60.7904 = 0.0000
0.0000 + -3.14r2 = 0.00 + -60.7904
-3.14r2 = 0.00 + -60.7904

Combine like terms: 0.00 + -60.7904 = -60.7904
-3.14r2 = -60.7904

Divide each side by '-3.14'.
r2 = 19.36

Simplifying
r2 = 19.36

Take the square root of each side:
r = {-4.4, 4.4}

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