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Simplifying
9224.1896 = 4 * 3.14r2
Multiply 4 * 3.14
9224.1896 = 12.56r2
Solving
9224.1896 = 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.
9224.1896 + -12.56r2 = 12.56r2 + -12.56r2
Combine like terms: 12.56r2 + -12.56r2 = 0.00
9224.1896 + -12.56r2 = 0.00
Add '-9224.1896' to each side of the equation.
9224.1896 + -9224.1896 + -12.56r2 = 0.00 + -9224.1896
Combine like terms: 9224.1896 + -9224.1896 = 0.0000
0.0000 + -12.56r2 = 0.00 + -9224.1896
-12.56r2 = 0.00 + -9224.1896
Combine like terms: 0.00 + -9224.1896 = -9224.1896
-12.56r2 = -9224.1896
Divide each side by '-12.56'.
r2 = 734.41
Simplifying
r2 = 734.41
Take the square root of each side:
r = {-27.1, 27.1}
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