calculate the volume of a sphere with a mass of 4050 g and a density of 6.21 g/cm^3

The key is to do something to those two values and make sure the units work out.

I don't like to do other people's homework, but if you want to make a real attempt, I would be happy to discuss your answer and help you if you are doing something wrong.

To help you start, you got something measured in grams, and you got something measured in grams/centimeter_cubed. Which part of these units sounds like a volume?

You have the total mass and the density. Consider the units of density (mass per unit volume) and manipulate those two known into your desired answer.

Here's an extension question. What is the radius of that sphere?

Rap