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What is the approximate distance between Portland, Oregon (45° north, 122° west), and San Francisco, California (37° north, 122° west). Use 3,960 miles for the radius of Earth. 258 miles 553 miles 720
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What is the approximate distance between Portland, Oregon (45° north, 122° west), and San Francisco, California (37° north, 122° west). Use 3,960 miles for the radius of Earth.

258 miles



553 miles



720 miles



1,346 miles

User Jeson Dias
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7.9k points

2 Answers

2 votes

The correct answer is

553 miles

:)

User Michael Skarum
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8.3k points
6 votes
From the given data in the problem, the longitude is essentially the same, and using the coordinates, the locations are 8° apart. The 8° is 8/360 of the circumference of the circle. The circumference is 2π • 3960. Substituting, (8 • 2π • 3960) / 360 = 4π • 44 = 553 miles. Thus, option B is the answer.
User Zhenia
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9.1k points
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