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Simplifying
48.9866 = 3.14r2
Solving
48.9866 = 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.
48.9866 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
48.9866 + -3.14r2 = 0.00
Add '-48.9866' to each side of the equation.
48.9866 + -48.9866 + -3.14r2 = 0.00 + -48.9866
Combine like terms: 48.9866 + -48.9866 = 0.0000
0.0000 + -3.14r2 = 0.00 + -48.9866
-3.14r2 = 0.00 + -48.9866
Combine like terms: 0.00 + -48.9866 = -48.9866
-3.14r2 = -48.9866
Divide each side by '-3.14'.
r2 = 15.60082803
Simplifying
r2 = 15.60082803
Take the square root of each side:
r = {-3.949788353, 3.949788353}
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