If a windshield wiper covers an area of approximately 200 square inches when it rotates at an angle of 84°, find the length of the wiper to the nearest tenth of an inch. The length of the wiper is approximately inches.

≈ 16.5 in

Step-by-step explanation:

r- is the length of the wiper

Area of circle= πr²

Area of 84° sector = πr²*84/360= 200 in²

3.14r²*84/360= 200

r²= 200*360/84*3.14

r²= 273

r= √273

r≈ 16.5 in

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step-by-step explanation:

yes

step-by-step explanation: