How far is geographic second?

A. Around 100 feet
B. Around 1,000 feet
C. 5,000 feet
D. None of the above

All the way around the Earth = 360 degrees

(360 degrees) x (60 minutes/degree) x (60 seconds/minute)

= 1,296,000 seconds

All the way around the Earth = 1,296,000 seconds of angle

But all the way around the Earth = about 25,000 miles

Each  mile = 5,280 feet

All the way around the Earth = (about 25,000 miles)x(5,280 feet/mile)

= about 132,000,000 feet

So each second of angle = (about 132,000,000 feet) / (1,296,000)

That's (about 101.85 feet).

Which is pretty durn close to "Around 100 feet". (choice-A)

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