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10. A circle has an arc with measure 80° and length 887. What is the diameter of the circle?
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4 votes
10. A circle has an arc with measure 80° and length 887. What is the
diameter of the circle?

User Xilef
by
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1 Answer

4 votes
The diameter of the whole circle is 2*pi*radius . The arc length is then 80/360*pi*radius*=88*pi
radius=88*180/80
=44*180/40
=22*180/20
=11*180/10
=11*18
=(10+1)*18
=198
The diameter is 2*198=(200-2)=400-4=396

SO BASICALLY THE ANSWER IS 396
User Aderushev
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