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Simplifying
2828 = 3.14r2
Solving
2828 = 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.
2828 + -3.14r2 = 3.14r2 + -3.14r2
Combine like terms: 3.14r2 + -3.14r2 = 0.00
2828 + -3.14r2 = 0.00
Add '-2828' to each side of the equation.
2828 + -2828 + -3.14r2 = 0.00 + -2828
Combine like terms: 2828 + -2828 = 0
0 + -3.14r2 = 0.00 + -2828
-3.14r2 = 0.00 + -2828
Combine like terms: 0.00 + -2828 = -2828
-3.14r2 = -2828
Divide each side by '-3.14'.
r2 = 900.6369427
Simplifying
r2 = 900.6369427
Take the square root of each side:
r = {-30.010613834, 30.010613834}
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