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Simplifying 440 = 2(3.14) * r + 2(110) Multiply 2 * 3.14 440 = 6.28r + 2(110) Multiply 2 * 110 440 = 6.28r + 220 Reorder the terms: 440 = 220 + 6.28r Solving 440 = 220 + 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. 440 + -6.28r = 220 + 6.28r + -6.28r Combine like terms: 6.28r + -6.28r = 0.00 440 + -6.28r = 220 + 0.00 440 + -6.28r = 220 Add '-440' to each side of the equation. 440 + -440 + -6.28r = 220 + -440 Combine like terms: 440 + -440 = 0 0 + -6.28r = 220 + -440 -6.28r = 220 + -440 Combine like terms: 220 + -440 = -220 -6.28r = -220 Divide each side by '-6.28'. r = 35.03184713 Simplifying r = 35.03184713
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