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Simplifying 69524.1216 = 4 * 3.14r2 Multiply 4 * 3.14 69524.1216 = 12.56r2 Solving 69524.1216 = 12.56r2 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-12.56r2' to each side of the equation. 69524.1216 + -12.56r2 = 12.56r2 + -12.56r2 Combine like terms: 12.56r2 + -12.56r2 = 0.00 69524.1216 + -12.56r2 = 0.00 Add '-69524.1216' to each side of the equation. 69524.1216 + -69524.1216 + -12.56r2 = 0.00 + -69524.1216 Combine like terms: 69524.1216 + -69524.1216 = 0.0000 0.0000 + -12.56r2 = 0.00 + -69524.1216 -12.56r2 = 0.00 + -69524.1216 Combine like terms: 0.00 + -69524.1216 = -69524.1216 -12.56r2 = -69524.1216 Divide each side by '-12.56'. r2 = 5535.36 Simplifying r2 = 5535.36 Take the square root of each side: r = {-74.4, 74.4}
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