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Simplifying
10 = 3.14r2
Solving
10 = 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.
10 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
10 + -3.14r2 = 0.00
Add '-10' to each side of the equation.
10 + -10 + -3.14r2 = 0.00 + -10
Combine like terms: 10 + -10 = 0
0 + -3.14r2 = 0.00 + -10
-3.14r2 = 0.00 + -10
Combine like terms: 0.00 + -10 = -10
-3.14r2 = -10
Divide each side by '-3.14'.
r2 = 3.184713376
Simplifying
r2 = 3.184713376
Take the square root of each side:
r = {-1.784576526, 1.784576526}
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