You can't give a single answer to the question "What is the volume of planets?" because each planet in our solar system (and beyond) has a different volume.

Here's how to find the volume of a planet:

* Shape: Planets are generally considered spheres.

* Formula: The volume of a sphere is calculated using the formula: V = (4/3)πr³, where:

* V is the volume

* π (pi) is approximately 3.14159

* r is the radius of the planet (the distance from the center to the surface)

To find the volume of a specific planet:

1. Look up the radius: You can find the radius of any planet on a website like NASA's Solar System Exploration website.

2. Plug the radius into the formula: Calculate the volume using the formula above.

Example: Let's find the volume of Mars:

* The radius of Mars is approximately 3,390 kilometers.

* V = (4/3)π(3,390 km)³

* V ≈ 1.63 x 10¹¹ cubic kilometers

Let me know if you want to calculate the volume of a specific planet!