6644.24-3.14*r^2=

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Solution for 6644.24-3.14*r^2= equation: 


Simplifying
6644.24 + -3.14r2 = 0

Solving
6644.24 + -3.14r2 = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-6644.24' to each side of the equation.
6644.24 + -6644.24 + -3.14r2 = 0 + -6644.24

Combine like terms: 6644.24 + -6644.24 = 0.00
0.00 + -3.14r2 = 0 + -6644.24
-3.14r2 = 0 + -6644.24

Combine like terms: 0 + -6644.24 = -6644.24
-3.14r2 = -6644.24

Divide each side by '-3.14'.
r2 = 2116

Simplifying
r2 = 2116

Take the square root of each side:
r = {-46, 46}

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