Eh yo, someone tell me what the circumference of the earth divided by its radius is.
2007-02-23 12:33:22 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
the answer will differ depending on how you measure, since the earth is not perfectly round..
The circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers).
But, if you measure the earth through the poles the circumference is a bit shorter - 24,859.82 miles (40,008 km). This the earth is a tad wider than it is tall, giving it a slight bulge at the equator. This shape is known as an ellipsoid or more properly, geoid (earth-like).
The Earth's equatorial radius, or semi-major axis, is the distance from its center to the equator and equals 6,378.135 km (≈3,963.189 mi; ≈3,443.917 nmi).
The Earth's polar radius, or semi-minor axis, is the distance from its center to the North and South Poles, and equals 6,356.750 km (≈3,949.901 mi; ≈3,432.370 nmi).
once you decide which measurement to use, just use a calculator to figure it out.
2007-02-23 12:40:50 · answer #1 · answered by dem_no_worry_me 2 · 0⤊ 0⤋
The circumference of a circle divided by its diameter is Pi. Since the radius is half the diameter, the number you are looking for is 2*Pi.
2007-02-23 12:37:36 · answer #2 · answered by davidbgreensmith 4 · 0⤊ 0⤋
yo, Circumference = 2 x pi x radius
Therefore circumference/ radius = 2 pi = 2 x 3.14 = 6.28
2007-02-23 12:37:27 · answer #3 · answered by ignoramus_the_great 7 · 0⤊ 0⤋
The Earth's mean circumference is 40.041.47 km, and its mean radius is 6,372.797 km. Doing the division gets you:
40,041.47 / 6,372.797 = 6.28319
which is 2 times 3.14159, or 2 π
2007-02-23 14:21:32 · answer #4 · answered by Scythian1950 7 · 0⤊ 0⤋
2*pi*r/r
=2*pi
2007-02-23 12:40:57 · answer #5 · answered by ? 4 · 0⤊ 0⤋
2pi
2pi *r = C
2pi = C/r
2007-02-23 12:36:58 · answer #6 · answered by kash 3 · 0⤊ 0⤋