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Use the formula to find the radius of a body from its gravitational acceleration and the gravitational constant (all bodies have gravity that is proportional to their mass).

See related links for a web page that will do the calculations for you.

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Q: How do you find the radius of a planet?
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Related questions

Which planet has the largest radius?

Jupiter has the largest radius of any planet in our solar system.


Which Planet has the Largest equatorial radius?

Jupiter is that planet.


What is the radius of planet Jupiter?

Jupiter has an average radius of about 69,911 kilometers.


What planet is the closest in size to the Moon?

Mercury is the closest planet in size to the Moon. Mercury is only slightly larger than the Moon, with a diameter that is about 38% larger.


What is the mass of the planet with the largest radius?

The planet with the largest radius is Jupiter, and its mass is approximately 318 times that of Earth.


What is the radius of planet mars?

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


What planet has the longest radius?

Jupiter has the largest diameter (the radius is half the diameter, of course).


What is the same size as the planet Mars?

The planet Mars is similar in size to Earth's moon, with a diameter of about 4,200 miles (6,800 kilometers).


What does the gravitational field strength on a planet depend on?

The gravitational field strength on a planet depends on its mass and the distance from the planet's center. The greater the planet's mass, the stronger the gravitational field, and the closer you are to the planet's center, the stronger the gravitational field.


Planet mercury's size?

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


If i wanted find out how big a planet is what word would i use?

In terms of the actual size of the planet, you would want to no its diameter. In some cases the size is given as the radius, which is simply half the diameter.


Do objects on other planets weigh the same as they weigh on Earth?

No. Weight is the measure of how much force a planet pulls an object, that force is determined by the planet's mass and radius, and each planet has a different mass and radius.