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Simplifying
51445.76 = 3.14r2
Solving
51445.76 = 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.
51445.76 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
51445.76 + -3.14r2 = 0.00
Add '-51445.76' to each side of the equation.
51445.76 + -51445.76 + -3.14r2 = 0.00 + -51445.76
Combine like terms: 51445.76 + -51445.76 = 0.00
0.00 + -3.14r2 = 0.00 + -51445.76
-3.14r2 = 0.00 + -51445.76
Combine like terms: 0.00 + -51445.76 = -51445.76
-3.14r2 = -51445.76
Divide each side by '-3.14'.
r2 = 16384
Simplifying
r2 = 16384
Take the square root of each side:
r = {-128, 128}
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