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21 July, 18:27

Earths circumference is approximately 25,000 miles. If you could dig a tunnel to the center of earth, how long will the title be? Round to the nearest 10th mile.

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  1. 21 July, 18:40
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    r ≈ 3,980 miles

    Step-by-step explanation:

    C = 2 r π

    C = 25,000

    r = C / (2π) = 25,000 / (2π)

    r = 3,978.87357678

    r ≈ 3,980 miles
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