circumference of the spherical earth is 21
Here it = = 3-142857 ; r = radius of the earth. ] We know the length of the eart
circumference = 24,902 mile.
.: 20 r = 2 * 3.142857 x T.
- 2 * 3.142857 x T = 24,902 mile (equation)
24,902
2 * 3.142857, or, r = 3,961.68 mile,
.. Earth's radius = 3.962 mile.
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Explanation:
the simple area of common
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