izzyb422 izzyb422

22-03-2017
Mathematics

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The circumference of the earth is about 25,000 miles. Approximately how far is it from any point on the earth's surface to its center?

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JoshEast JoshEast

22-03-2017

Since C = 2rπ

if the C of earth = 25000 miles

then the r = C ÷ (2π)
= 25,000 miles ÷ 2π
= 12500 ÷ π
≈ 3978.87358 miles

Since radius is a measure of the distance from the center to any point on the circle then that distance would be about 3978.8736 miles

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