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Simplifying 408.0744 = 3.14r2 Solving 408.0744 = 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. 408.0744 + -3.14r2 = 3.14r2 + -3.14r2 Combine like terms: 3.14r2 + -3.14r2 = 0.00 408.0744 + -3.14r2 = 0.00 Add '-408.0744' to each side of the equation. 408.0744 + -408.0744 + -3.14r2 = 0.00 + -408.0744 Combine like terms: 408.0744 + -408.0744 = 0.0000 0.0000 + -3.14r2 = 0.00 + -408.0744 -3.14r2 = 0.00 + -408.0744 Combine like terms: 0.00 + -408.0744 = -408.0744 -3.14r2 = -408.0744 Divide each side by '-3.14'. r2 = 129.96 Simplifying r2 = 129.96 Take the square root of each side: r = {-11.4, 11.4}
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