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Simplifying
125600 = 3.14r2
Solving
125600 = 3.14r2
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-3.14r2' to each side of the equation.
125600 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
125600 + -3.14r2 = 0.00
Add '-125600' to each side of the equation.
125600 + -125600 + -3.14r2 = 0.00 + -125600
Combine like terms: 125600 + -125600 = 0
0 + -3.14r2 = 0.00 + -125600
-3.14r2 = 0.00 + -125600
Combine like terms: 0.00 + -125600 = -125600
-3.14r2 = -125600
Divide each side by '-3.14'.
r2 = 40000
Simplifying
r2 = 40000
Take the square root of each side:
r = {-200, 200}
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