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Simplifying 69.08 = 3.14 * 2r Multiply 3.14 * 2 69.08 = 6.28r Solving 69.08 = 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. 69.08 + -6.28r = 6.28r + -6.28r Combine like terms: 6.28r + -6.28r = 0.00 69.08 + -6.28r = 0.00 Add '-69.08' to each side of the equation. 69.08 + -69.08 + -6.28r = 0.00 + -69.08 Combine like terms: 69.08 + -69.08 = 0.00 0.00 + -6.28r = 0.00 + -69.08 -6.28r = 0.00 + -69.08 Combine like terms: 0.00 + -69.08 = -69.08 -6.28r = -69.08 Divide each side by '-6.28'. r = 11 Simplifying r = 11
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