How big is the radius of the earth?
152159
At the Equator, Earth's radius is --\n6,378 km\n3,963 miles\n6,378,000 meters
1090272
11038.509198867 kph.\n\nThe math: a circular geosynchronous equatorial orbit has a radius of approximately 42,164 km (from the center of the Earth).  To get the diameter of the orbit,  pi * 2 * 42164, or 264924.2207728 km diameter for the entire orbit.  Divide by 24 to get the distance traveled in one hour, 11038.509198867 kph.
713948
No, the circumference is nearer 24,900 miles at the equator, if by planet you mean Mother Earth.
724249
3.14 inch !! Surprised No? Here is te answer, when we  tie apiece of string around the earth so that it touches all the way around means , we are calculating the circumference of the cross section of the earth.\n\nLet R be the radius of the cross section which is a circle, then coircumference will be\n\n2(Pie)R\n\nNow to get the string 1/2 an inch away from the surface, we need to increase the radius by 1/2 an inch, Thus the new circum ference will be\n\n2(pie) x(R+1/2)\n\n= 2(Pie)R + 2(Pie)/2\n\n=2(Pie) R + Pie\n\nDifference in the new circumference and old will be the difference in the length of the string which will be equal to\n\n2(Pie)R + Pie -2(Pie)R = Pie\n\n\nand value of Pie is 22/7 =3.14, Since we have taken inch as our Unit, Answer will be 3.14 inches more string would be required.
665724
The diameter of the earth at the equator in kilometers is approximately 12,756 kilometers.
751259
Earth is roughly 8,000 miles in diameter, and 25,000 miles in circumference.
9885
To answer this question, I'm going to assume the Earth is a perfect sphere.\n\nThe Earth's average radius is about 6.37*10^6 m. Then you can use trignometry to figure out the radius at 38 degrees north.\n\ncos(38 degrees)=r/6.38*10^6 m\nr is about 5.03*10^6 m\nTherefore the diameter is about 1.01*10^7 meters.
674138
Very similar to Earth's size.
866619
It would take about 57000 Earths to span the classical diameter of an electron.\n\nThe universe has been in existence for 1.37E+10 years.  It would therefore be somewhere around that many lightyears in radius.  That's 1.296E+23 kilometers.\n\n(In fact, the universe is probably larger than this because of the inflationary expansion during which space appeared as a consequence of the relaxation of the primordial energy that created the universe to begin with.)\n\nEarth's radius is 6378 kilometers, which means that it would take 2.032E+19 Earths to span across the universe.\n\nOn a scale at which the universe is one meter wide, Earth's radius would be 4.921E-20 m.  The classical radius of an electron is 2.82E-15, so the electron (in the real world) would be (classically speaking) 57000 times wider than Earth (in the model).\n\nHowever, the Planck length is 1.616E-35 meters, and so even the scaled down Earth is still 3.045E+15 Planck lengths in radius.  If the Planck length were scaled UP by the same amount, it would still be only about 21 Angstroms long: about the wavelength of x-rays.
437010
its a "sphere" so to speak...so it does have a radius..\n\nthe problem is that since it spins, its a bit wider at the equator..so you need to specify the radius at that location or the polar radius...\n\nmost ppl care about the equatorial radius.\n\nthe Earth's equatorial radius, or semi-major axis, is the distance from its centre to the equator and equals 6,378.135 km (≈3,963.189 mi; ≈3,443.917 nmi).
184801
about the same size as the sun, it's average in many ways.\nthe diameter of the sun is about 860,000 miles.
600291
The sun is by far the largest object in our solar system. It contains 98% of the solar system's total mass.\n\nIt would take 109 earths to stretch across the sun, and it would take over one million earths to "fill up" the sun if it were hollow.\n\nIf you think of the sun as being the size of a basketball, then the earth would be about the size of the head of a pin.\n\nThe diameter of the Sun is 865,400 mi \nEarth equatorial diameter=7926 mi (12760 km)\nEarth polar diameter=7900 mi (12720 km)\n\nSun's surface area is approximately 12,000 times that of Earth.\n\nMore info:
240810
Earth is 12,742 kilometers (7,900 miles) in diameter. That's how far you would have to tunnel to dig to the other side of the Earth!\n\nThe circumference of the earth at the equator is 24,901.55 miles (40,075.16 kilometers).
992569
The circumference of the earth at the equator is approximately 24,902 miles.  This works out to about 40.16 times around.
855234
Earth rotates 360 degrees in 24 hours or 15 degrees per hour that it goes through 0,5 degrees of rotation in two Minutes\n\nClick on the URL below for addition information concening the earth rotation. See Item 17\n\nhelios.gsfc.nasa.gov/qa_earth.html \n\n. - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nThe diameter is 7926 Miles\n\nCircumference\n\nc = d π\n\nc = 7916(3.141592654)\n\nc = 24900.26337 miles\n\nClick on the URL below for additional informatio concerning the circumference of the earth\n\nwww.lyberty.com/encyc/articles/earth.html \n\n- - - - - - - - - - - - - - - - - - - - - - - - \n\nSolving for earth rotation per degree in miles\n\n24900 ÷ 360 = 69.16666667\n\nThe earth  rotates 69.2 Miles for each degree of rotation. Rounded to one decimal point.\n\n- - - - - -s-
1163423
What is the circumference of the Earth? How far around is the Earth?\n\nThe average radius of the Earth is 3,959 miles (6,374 kilometers).\nThe equitorial diameter of the Earth (distance from one side of the Earth to the other at the equator) is about 7,926 miles.\n\nThe ratio of the circumference to the diameter of a circle (circumference/diameter) \nis written as the symbol pi. \nPi is approximately 3.141592.\n3.14159265\n3.1415926535\n\nTherefore, to determine the circumference from the diameter given above:\nequitorial diameter x 3.141592 = equitorial circumference\n| |\n7,926 x 3.141592 = 24,900\n| |\nThe earth has a circumference of approximately 24,900 miles.\n\nMore precisely the circumference of the earth\nat the equator is 24,902 mi / 40,076 km. \n\n------------------\n\nHow fast would you have to travel to see the sun set twice, \nor outrun the shadow of the setting sun?\n\nSince the sun "travels" once around the earth every 24 hours, \nwe can get the speed by dividing the circumference of the earth by 24:\n\nmiles divided by hours\n| |\n24,900 / 24 = 1,038 miles per hour\n\n....\n\nA RATIO of a to b can be expressed in three ways:\n1. a : b\n2. a / b\n3. a ÷ b
652664
The length of the earth's orbit (orbital circumference) is 924,375,700 kilometres according to wikipedia.