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Simplifying 5(r) = 4 * 3.14r2 Multiply 4 * 3.14 5r = 12.56r2 Solving 5r = 12.56r2 Solving for variable 'r'. Combine like terms: 12.56r2 + -12.56r2 = 0.00 5r + -12.56r2 = 0.00 The solution to this equation could not be determined.
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