Question 836390
a rectangular window measures 54 inches by 24 inches. There is a 17 inch wiper blade attached by a 5 inch arm at the center of the base of the window. If the arm rotates 120 degrees, approximate the percentage of the window's area that is wiped by the blade
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rectangular area = 54*24 in^2
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wiper area = (1/3)pi*5^2
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Ans:
Percent = [(1/3)pi*25]/[54*24] = 0.0202 = 2.02%
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Cheers,
Stan H.