2011 AMC 8 Problems/Problem 13
The overlap length is 5, so the shaded area is 5 * 15 =75. The area of the whole shape is 25*15 = 375 The fraction 75/375 reduces to 1/5 or 20%.
The overlap length is 5, so the shaded area is 5 * 15 =75. The area of the whole shape is 25*15 = 375 The fraction 75/375 reduces to 1/5 or 20%.
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