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Problem 911

The surface area of a sphere is \(4 \pi \mathrm{r} 2\), where \(\mathrm{r}\) is the radius of the sphere. Assuming that the diameter of the earth is 800 miles and \(\pi=22 / 7\), what is the surface area of the earth?

Expert verified

The surface area of the Earth is approximately 2,011,428.32 square miles.

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Chapter 52

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