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Pasadena City College *

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Course

012

Subject

Astronomy

Date

Oct 30, 2023

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png

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1

Uploaded by PresidentDangerRaven27

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An estimate of the distance around the earth was done by a scientist who noted that the noontime position of the sun differed by 7°12" from one city to the next closest city. (See the figure.) The distance between these two cities is 490 mi. Use the arc length formula to estimate the radius of Earth. Then find the circumference of Earth. Sun's rays at noon . Y, ¥ | | ! Shadow City &l | | | \ | ’f Citvy B L,’ 7° 12" | i The radius of the Earth is approximately 3899 mi. (Do not round until the final answer. Then round to the nearest mile as needed.) Therefore, the circumference of the Earth is approximately D mi. (Round to the nearest mile as needed.)
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