1313.04=3.14r^2

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Solution for 1313.04=3.14r^2 equation: 


Simplifying
1313.04 = 3.14r2

Solving
1313.04 = 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.
1313.04 + -3.14r2 = 3.14r2 + -3.14r2

Combine like terms: 3.14r2 + -3.14r2 = 0.00
1313.04 + -3.14r2 = 0.00

Add '-1313.04' to each side of the equation.
1313.04 + -1313.04 + -3.14r2 = 0.00 + -1313.04

Combine like terms: 1313.04 + -1313.04 = 0.00
0.00 + -3.14r2 = 0.00 + -1313.04
-3.14r2 = 0.00 + -1313.04

Combine like terms: 0.00 + -1313.04 = -1313.04
-3.14r2 = -1313.04

Divide each side by '-3.14'.
r2 = 418.1656051

Simplifying
r2 = 418.1656051

Take the square root of each side:
r = {-20.449097904, 20.449097904}

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