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Simplifying
26.4074 = 3.14r2
Solving
26.4074 = 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.
26.4074 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
26.4074 + -3.14r2 = 0.00
Add '-26.4074' to each side of the equation.
26.4074 + -26.4074 + -3.14r2 = 0.00 + -26.4074
Combine like terms: 26.4074 + -26.4074 = 0.0000
0.0000 + -3.14r2 = 0.00 + -26.4074
-3.14r2 = 0.00 + -26.4074
Combine like terms: 0.00 + -26.4074 = -26.4074
-3.14r2 = -26.4074
Divide each side by '-3.14'.
r2 = 8.41
Simplifying
r2 = 8.41
Take the square root of each side:
r = {-2.9, 2.9}
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