The diameter of a circle is 8 kilometers. What is the angle measure of an arc ​ kilometers long?

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The diameter of a circle is 8 kilometers. What is the angle measure of an arc ​ kilometers long?

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    2021-09-10T19:39:27+00:00

    Answer: 14.32 degrees

    The circle has a diameter of 8 kilometers, so the perimeter would be:
    perimeter= pi * diameter
    perimeter= 22/7 * 8 kilometers= 25.14 kilometers

    A full perimeter of the circle, which is 25.14km,  has 360° angle. So 1km arc would be: 1km/ 25.14 km * 360°= 14.32°

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