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28 August, 14:02

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

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  1. 28 August, 17:13
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    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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