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Half the distance in a straight line from one side of a planet to the other through the centre of the planet with the distance measured from the equaor on both sides. In other words, the radius of the sphere of the planet measured, not at the pole, but at the equator. It is important to distinguish between polar radius and equatorial radius because no planet is an exact sphere, but 'bulges out' at the equator because of 'centrifugal force' as the planet rotates. This is most marked in the gas giants of the solar system especially Jupiter and Saturn, which look distinctly flattened at the poles when viewed through a telescope, so that the polar radii are very much smaller that the equatorial radii.

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16y ago
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7mo ago

The equatorial radius is the distance from the center of the Earth to the equator, measuring the Earth's radius at its widest point. It is larger than the polar radius due to the Earth's rotation, resulting in a bulging shape at the equator. The equatorial radius of the Earth is approximately 6,378 kilometers.

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Q: What is Equatorial Radius?
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Planet mercury's size?

Its equatorial radius is 2439.7 kilometers. That is about 38% of Earth's equatorial radius.


What is the radius at the equator?

The Equatorial radius is 6378.1Km


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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)


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It is 71492 kilometres.


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Jupiter is that planet.


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The radius of the sun is half of its equatorial diameter, so it would be 695,000 km.


What is the circumference of Mars?

The equatorial radius 3,396.2 kilometers (2,110miles).The equatorial circumference of Mars is 21,339 kilometers (13,259 miles).Compared to Earth, the ratio is .533, i.e. the radius and circumference of Mars is about half the radius and circumference of Earth.


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The average radius of Mars is about 3,389.5 kilometers.


What is the Jupiter radius?

Jupiter is not a perfect sphere: it bulges out at its equator.The polar radius is 66854 kmThe equatorial radius is 71492 kmThe average radius is 69911 km.


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