36.2484=4*3.14*r^2

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Solution for 36.2484=4*3.14*r^2 equation: 


Simplifying
36.2484 = 4 * 3.14r2

Multiply 4 * 3.14
36.2484 = 12.56r2

Solving
36.2484 = 12.56r2

Solving for variable 'r'.

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

Add '-12.56r2' to each side of the equation.
36.2484 + -12.56r2 = 12.56r2 + -12.56r2

Combine like terms: 12.56r2 + -12.56r2 = 0.00
36.2484 + -12.56r2 = 0.00

Add '-36.2484' to each side of the equation.
36.2484 + -36.2484 + -12.56r2 = 0.00 + -36.2484

Combine like terms: 36.2484 + -36.2484 = 0.0000
0.0000 + -12.56r2 = 0.00 + -36.2484
-12.56r2 = 0.00 + -36.2484

Combine like terms: 0.00 + -36.2484 = -36.2484
-12.56r2 = -36.2484

Divide each side by '-12.56'.
r2 = 2.886019108

Simplifying
r2 = 2.886019108

Take the square root of each side:
r = {-1.698828746, 1.698828746}

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