This is nothing to do with planets. It's part of the theory of black holes.
Perhaps you mean if the planet's mass were concentrated into a black hole.
In that case the answer is Jupiter, because it has the greatest mass.
The Schwartzchild radius.
Well, darling, the Schwarzschild radius is basically the point of no return around a black hole where not even light can escape. It's like the ultimate "do not enter" zone in space. So, if you ever find yourself approaching a black hole, you better hope you don't cross that radius unless you want to be spaghetti-fied into oblivion.
Saturn has a radius of 36,184 miles (58,232 kilometers). This makes Saturn the second largest planet in the Solar System, after Jupiter.
The black hole with a mass of 3 solar masses has the largest radius among the objects listed. This is because the radius of a black hole is determined by its mass and the Schwarzschild radius formula, which dictates that the radius of a black hole increases with its mass.
That would be Uranus. Uranus has a diameter of about 51,000km, making it the third largest planet in terms of radus/diameter/volume etc. but it's mass is only 15 times that of Earth, less than Neptune, making it the fourth largest in terms of mass.
Jupiter is the largest planet and therefore has the largest radius. The radius of Jupiter is 43,441 miles (69,911 kilometers).
Jupiter is that planet.
In our solar system, Jupiter is the planet with the largest radius of 71,492 km It has a mass of 1.8986×1027 kg
The Schwartzchild radius.
The schwarzschild radius of the Earth is about 8.7 x 10 to the negative 3m. The schwarzschild radius is the radis of a sphere that is around a non-rotating blackhole. You find the Rs, or radis, by multiplying the gravitational constant(G), the mass(M), and two. You divide this by the speed of light(c) squared.
speed of sound
Jupiter has the largest diameter (the radius is half the diameter, of course).
The black hole property that determines the Schwarzschild radius of the black hole is that it has mass but no angular momentum nor electric charge.
Well, darling, the Schwarzschild radius is basically the point of no return around a black hole where not even light can escape. It's like the ultimate "do not enter" zone in space. So, if you ever find yourself approaching a black hole, you better hope you don't cross that radius unless you want to be spaghetti-fied into oblivion.
Saturn has a radius of 36,184 miles (58,232 kilometers). This makes Saturn the second largest planet in the Solar System, after Jupiter.
The Schwarzschild radius is a concept in general relativity that defines the radius at which a mass would need to be compressed in order to become a black hole. For a 200 lb man, the Schwarzschild radius would be extremely small, approximately 3.1 x 10^-27 meters, indicating that the man's mass is not concentrated enough to form a black hole.
It is called the Schwarzschild radius