- #1

chocolatelover

- 239

- 0

**[SOLVED] sphere problem**

## Homework Statement

One cubic meter of aluminum has a mass of 2.70 x 10^3 kg, and the same volume of iron has a mass of 7.86X 10^3 kg. Find the radius of a solid aluminum sphere that will balance a solid iron sphere of radius 1.80 cm on an equal-arm balance.

## Homework Equations

volume of a sphere=4/3pir^3

## The Attempt at a Solution

I would first need to convert everything into cm and then set 4/3pir^3=4/3pi1.80^3 and solve for r, right? I don't need to do anything with the mass, right?

Thank you in advance