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Direct linkAarao, J.; Cox, A.; Jones, C.; Martelli, M.; Westfahl, A. – College Mathematics Journal, 2006
The area of a constant-width band is shown to be twice the length of its middle section times its width "h." The length of the middle section is shown to be equal to the length of the inner boundary plus [pi]"h." These results are obtained using the change of variables formula for double integrals.
Descriptors: Mathematics Instruction, College Mathematics, Mathematical Formulas, Measurement Techniques
