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The circumference of a circle is 25.12 miles. What is the circle's diameter? C=25.12 mi Use 3.14 for ​pi
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The circumference of a circle is 25.12 miles. What is the circle's diameter? C=25.12 mi Use 3.14 for ​pi

User Noodl
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Circumference=2pi*r or
and diameter=2r
in your case, the circumference is 25.12 miles, so we plug it in to the first formula:
25.12=2pi*r
12.56=3.14*r
4=r
and since 2r=diameter, the diameter is 8
User Navins
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5.4k points
5 votes
The answer to your question is 8mi. I just divide the circumference by pi to find your diameter.
User Martin Rasumoff
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