10273.5776=4*3.14*r^2

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Solution for 10273.5776=4*3.14*r^2 equation: 


Simplifying
10273.5776 = 4 * 3.14r2

Multiply 4 * 3.14
10273.5776 = 12.56r2

Solving
10273.5776 = 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.
10273.5776 + -12.56r2 = 12.56r2 + -12.56r2

Combine like terms: 12.56r2 + -12.56r2 = 0.00
10273.5776 + -12.56r2 = 0.00

Add '-10273.5776' to each side of the equation.
10273.5776 + -10273.5776 + -12.56r2 = 0.00 + -10273.5776

Combine like terms: 10273.5776 + -10273.5776 = 0.0000
0.0000 + -12.56r2 = 0.00 + -10273.5776
-12.56r2 = 0.00 + -10273.5776

Combine like terms: 0.00 + -10273.5776 = -10273.5776
-12.56r2 = -10273.5776

Divide each side by '-12.56'.
r2 = 817.96

Simplifying
r2 = 817.96

Take the square root of each side:
r = {-28.6, 28.6}

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