SOLUTION: ⦁A car’s rear windshield wiper rotates 125°. The total length of the wiper mechanism is 20 inches and the length of the wiper blade is 12 inches. Find the area wiped by the wi

Algebra ->  Trigonometry-basics -> SOLUTION: ⦁A car’s rear windshield wiper rotates 125°. The total length of the wiper mechanism is 20 inches and the length of the wiper blade is 12 inches. Find the area wiped by the wi      Log On


   

Question 1195134: ⦁A car’s rear windshield wiper rotates 125°. The total length of the wiper mechanism is 20 inches and the length of the wiper blade is 12 inches. Find the area wiped by the wiper blade.
Found 2 solutions by ikleyn, Alan3354:
Answer by ikleyn(52775) About Me  (Show Source):
You can put this solution on YOUR website!
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May be, you describe for us how the wiper mechanism works, for clarity and for completeness purposes ?



Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
⦁A car’s rear windshield wiper rotates 125°. The total length of the wiper mechanism is 20 inches and the length of the wiper blade is 12 inches. Find the area wiped by the wiper blade.
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Find the area of a circle with a radius of 20 inches.
Subtract the area of a circle with a radius of 8 inches (20 - 12)
Multiply that by 125/360