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yeicooyola3
29.10.2019 •
Mathematics
The driver-side wiper blade is 26 inches long and the passenger-side wiper blade is 16 inches long. if the surface area of the windshield is 1250 square inches and both blades rotate at an angle of 100°, what percentage of the entire windshield is cleaned by the wiper blades? round your answer to the nearest percent and use the percent sign, like this: 42%
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Ответ:
65%
Step-by-step explanation:
Given in the question,
length of one wiper blade = 26 inches
length of other wiper blade = 16 inches
1 degree = 0.0174533 rad
100 degree = 1.745 rad
Surface area covered by first wiper blade
½ r² ∅
1/2 (26)²(1.745)
589.81 inches²
Surface area covered by second wiper blade
½ r² ∅
Surface area covered by first wiper blade
½ (16)²(1.745)
223.36 inches²
percentage cleaned by windshield
area covered by wipers / total windshield area
(223.36+589.81) / 1250
0.651 * 100%
65%
Ответ:
A
Step-by-step explanation: