3017.54=4*3.14*r^2

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Solution for 3017.54=4*3.14*r^2 equation: 


Simplifying
3017.54 = 4 * 3.14r2

Multiply 4 * 3.14
3017.54 = 12.56r2

Solving
3017.54 = 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.
3017.54 + -12.56r2 = 12.56r2 + -12.56r2

Combine like terms: 12.56r2 + -12.56r2 = 0.00
3017.54 + -12.56r2 = 0.00

Add '-3017.54' to each side of the equation.
3017.54 + -3017.54 + -12.56r2 = 0.00 + -3017.54

Combine like terms: 3017.54 + -3017.54 = 0.00
0.00 + -12.56r2 = 0.00 + -3017.54
-12.56r2 = 0.00 + -3017.54

Combine like terms: 0.00 + -3017.54 = -3017.54
-12.56r2 = -3017.54

Divide each side by '-12.56'.
r2 = 240.25

Simplifying
r2 = 240.25

Take the square root of each side:
r = {-15.5, 15.5}

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