gcain9059
31.07.2019 •
Mathematics
The diameter of a circle is 8 kilometers. what is the angle measure of an arc kilometers long?
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Ответ:
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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