What is the Earths circumference and diameter in statute miles?
Circumference of the earth =21600 nautical miles (But 1 nautical mile=1.15 statute mile) Therefore Circumference of the earth =21600*1.15 =24840 statute miles The circumference of a circle with radius ‘r’ is 2*pi*r and its diameter is 2*r, where ‘pi’ is the well known mathematical constant. So if the circumference of the earth = 24840 statute miles Diameter of the earth must be = (24840)/pi statute miles = (24840)/3.14 ( taking pi approx equal to 3.14) = 7910.83 statute miles.
