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Simplifying 125.6 = 2r * 3.14 Reorder the terms for easier multiplication: 125.6 = 2 * 3.14r Multiply 2 * 3.14 125.6 = 6.28r Solving 125.6 = 6.28r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-6.28r' to each side of the equation. 125.6 + -6.28r = 6.28r + -6.28r Combine like terms: 6.28r + -6.28r = 0.00 125.6 + -6.28r = 0.00 Add '-125.6' to each side of the equation. 125.6 + -125.6 + -6.28r = 0.00 + -125.6 Combine like terms: 125.6 + -125.6 = 0.0 0.0 + -6.28r = 0.00 + -125.6 -6.28r = 0.00 + -125.6 Combine like terms: 0.00 + -125.6 = -125.6 -6.28r = -125.6 Divide each side by '-6.28'. r = 20 Simplifying r = 20
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