C = 9,525 miles
D = 3,032 miles
The circumference of the planets vary. Mercury has a circumference of 9,522 miles. Venus has a circumference of 23,617 miles. Earth has a circumference of 24,889 miles. Mars has a circumference of 13,256 miles.
Mercury's diameter is about 4875 kilometers, at the equator. The circumference is "pi" x 4875. That's about 15315 kilometers.
The circumference of the moon is 6,790 miles (10,927 km). The circumference of Mercury is 9,525 miles (15,329 km). Mercury is larger than the moon.
Mercury, Venus, and Mars.
Mercury and Mars are the two planets that are almost the same size in our solar system. Both planets have a similar diameter, with Mercury being just slightly smaller than Mars.
Circumference is Pi x Diameter so do Circumference divided by Pi to get the diameter :)
4879 kilometers (about 3031 miles) is the approximate diameter of the planet Mercury. This is about 38% of the diameter of the Earth, making Mercury the smallest of the major planets.
Mercury's diameter (at the equator) = 4880km or 0.3825 x Earths diameter Venus' diameter = 12104km or 0.9488 x Earths Earth's diameter = 12756km Mars' diameter = 6794km or 0.5323 x Earths The inner planets are all much smaller than the outer gas planets; Jupiter's diameter = 142,984km or 11.21 x Earths Saturn's diameter = 120,534km or 9.45 x Earths Uranus' diameter = 51,114km or 4.01 x Earths Neptune's diameter = 49,532km or 3.88 x Earths
Circumference is pi times diameter. Diameter is circumference divided by pi. Diameter is twice the radius. Radius is half the diameter.
Diameter = Circumference/pi
diameter = circumference/pi
Mercury has a diameter of about 4880 kilometers. In comparison, Venus has a diameter of about 12100 kilometers and Earth has a diameter of about 12750 kilometers. Mars has a diameter of only about 6800 kilometers, but all the other planets are much bigger than the Earth.