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Simplifying
240 = 3.14r2
Solving
240 = 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.
240 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
240 + -3.14r2 = 0.00
Add '-240' to each side of the equation.
240 + -240 + -3.14r2 = 0.00 + -240
Combine like terms: 240 + -240 = 0
0 + -3.14r2 = 0.00 + -240
-3.14r2 = 0.00 + -240
Combine like terms: 0.00 + -240 = -240
-3.14r2 = -240
Divide each side by '-3.14'.
r2 = 76.43312102
Simplifying
r2 = 76.43312102
Take the square root of each side:
r = {-8.742603789, 8.742603789}
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