Earth parallel

Earth's radius is 6370 km long. Calculate the length parallel to latitude 50°.

Correct answer:

l =  25727 km

Step-by-step explanation:

N=50° rad=50° 180π =50° 1803.1415926 =0.87266=5π/18  R=6370 km r=R cos(N)=6370 cos0.87274094.5571 km l=2π r=2 3.1416 4094.5571=25727 km

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