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Simplifying
10635.9336 = 4 * 3.14r2
Multiply 4 * 3.14
10635.9336 = 12.56r2
Solving
10635.9336 = 12.56r2
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-12.56r2' to each side of the equation.
10635.9336 + -12.56r2 = 12.56r2 + -12.56r2
Combine like terms: 12.56r2 + -12.56r2 = 0.00
10635.9336 + -12.56r2 = 0.00
Add '-10635.9336' to each side of the equation.
10635.9336 + -10635.9336 + -12.56r2 = 0.00 + -10635.9336
Combine like terms: 10635.9336 + -10635.9336 = 0.0000
0.0000 + -12.56r2 = 0.00 + -10635.9336
-12.56r2 = 0.00 + -10635.9336
Combine like terms: 0.00 + -10635.9336 = -10635.9336
-12.56r2 = -10635.9336
Divide each side by '-12.56'.
r2 = 846.81
Simplifying
r2 = 846.81
Take the square root of each side:
r = {-29.1, 29.1}
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