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30-01-2021
Mathematics

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A circle has an arc whose measure is 80° and whose length is 88. What is the diameter of the circle?

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Аноним Аноним

30-01-2021

Answer:

length of arc=80/360×2πr

88×360=80×2×22/7×r

31680×7/(80×2×22)=r

r=221760/3520=63

diameter=2r=2×63=126

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