2006-12-21 02:45:16 · 6 answers · asked by Andromeda 1 in Science & Mathematics ➔ Earth Sciences & Geology
For extreme accuracy remote sensing satellites are used.
You cannot assume earth as a sphere as it is quite flattened at the poles. so dont use 4*pi*r^2 formula.
2006-12-21 02:47:37 · answer #1 · answered by Som™ 6 · 0⤊ 0⤋
The surface aea of the earth formula
s = 4 Ï r²
The equatorial diameter is 7926.42 Miles.
Radius = 3963.21 Miles
Insert the radius into the formula
S = 4 Ï r²
s = 4(3.141592654)(3963.21)²
s = 12.56637061(15707033.5)
s = 197380404.2 square miles
The surface area of the earth is approximate 197380404.2 square miles
- - - - - - -s-
2006-12-21 11:18:20 · answer #2 · answered by SAMUEL D 7 · 0⤊ 0⤋
Crudely; if you know the radius R it's
(4/3) * Pi * R^3
2006-12-21 10:54:56 · answer #3 · answered by Gene 7 · 0⤊ 0⤋
C of earth = 24,902mile
therefore r = 3,961.63
Area = 4 x pie x r^2
A = 4 x 3.1429 x 3,961.63^2
A = 197,305,130.29 miles sq.
2006-12-21 11:01:11 · answer #4 · answered by speedball182 3 · 0⤊ 0⤋
the formula for finding the area of a sphere, which is......i don't know
2006-12-21 10:48:39 · answer #5 · answered by Anonymous · 0⤊ 0⤋
i am not sure but it may be 4*22/7*(6.36*10^6)^3 =3.234*10^21
2006-12-21 10:55:39 · answer #6 · answered by the winner 1 · 0⤊ 1⤋