Question

Question #e33e6

Answer 1

You need to know two of the three to calculate the third.

The formula is: `rho=m/V`

In which `rho=`density, `m=`mass and `V=`volume

You can work this into:

`m=rho*V` or `V=m/rho` depending on the unknown.

`m=`mass can be determined by weighing

`V=`volume can be done by measuring (`l*w*h` if it is a regular block or `pi*r^2*h` if it's a cylinder), or by submersion in a graded vessel (and noting the difference).

`rho=` can be looked up in tables, if you know the exact material.