The Equatorial radius is 6378.1Km
If you assume thatequatriol = equatorial raduis = radius then the equatorial radius is the radius of the spheroid measured at its equator. It would be = length of the equator/(2*pi)
It is roughly 252 km.
The radius at the equator is 3,963 miles. It's slightly less through the poles.
Multiply the radius by 2, and then by pi. pi=3.141592654...
If C = 449,000 km then radius = 71,500 km
It's about 2440 kilometers. Mercury is almost spherical, so the radius is about the same everywhere.
The radius of the earth is about 3,970 miles at the equator, a little bit less from the center to the poles.
The average radius of Mars is about 2,106 miles (3,389 kilometers).
circumference = 2 x pi x radius radius = circumference/2 x pi
A pendulum will swing slowest when closest to the equator. Why is this? The time period, T, of the swing of a pendulum is given by: T=2π√(l/g) where l is the length of the pendulum and g is acceleration due to gravity. Because the Earth is spinning, there is a bulge at the equator and the poles are slightly flattened. Hence on the equator the radius to the centre of the earth is greater than the radius at the poles. The equatorial radius is 6378.1km while the polar radius is 6356.8 km The value of g at the Earth's surface relates to the values of the Earth's radius, r, at that point using an inverse square law ie g is proportional to 1/r2 At the North Pole, g is about 9.83m/s2, while at the equator, g is smaller, at only 9.79m/s2 . So the period of a pendulum will be longer (i.e. slowest) at the equator than at the pole
A segment of the equator is a portion of the Earth's surface that lies along the imaginary line that divides the Earth into the Northern and Southern Hemispheres. This segment is a circle with a radius equal to the Earth's radius and measures 1/360th of the Earth's circumference.
According to NASA, the earth's equatorial radius (not raduis) is 6378.1 km.