2604.4416=3.14*r^2

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Solution for 2604.4416=3.14*r^2 equation: 


Simplifying
2604.4416 = 3.14r2

Solving
2604.4416 = 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.
2604.4416 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
2604.4416 + -3.14r2 = 0.00

Add '-2604.4416' to each side of the equation.
2604.4416 + -2604.4416 + -3.14r2 = 0.00 + -2604.4416

Combine like terms: 2604.4416 + -2604.4416 = 0.0000
0.0000 + -3.14r2 = 0.00 + -2604.4416
-3.14r2 = 0.00 + -2604.4416

Combine like terms: 0.00 + -2604.4416 = -2604.4416
-3.14r2 = -2604.4416

Divide each side by '-3.14'.
r2 = 829.44

Simplifying
r2 = 829.44

Take the square root of each side:
r = {-28.8, 28.8}

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