SOLUTION: 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 degree

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
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
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.
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