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Simplifying
572.265 = 3.14r2
Solving
572.265 = 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.
572.265 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
572.265 + -3.14r2 = 0.00
Add '-572.265' to each side of the equation.
572.265 + -572.265 + -3.14r2 = 0.00 + -572.265
Combine like terms: 572.265 + -572.265 = 0.000
0.000 + -3.14r2 = 0.00 + -572.265
-3.14r2 = 0.00 + -572.265
Combine like terms: 0.00 + -572.265 = -572.265
-3.14r2 = -572.265
Divide each side by '-3.14'.
r2 = 182.25
Simplifying
r2 = 182.25
Take the square root of each side:
r = {-13.5, 13.5}
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