Calculate Thickness of Copper Plate | Density and Mass Formula

[runner1738]

Aflat circular plate of copper has a radius of .175m and a mass of 96.1 kg. What is the thickness of the plate? Answer in units of m.

I know that the density of copper is 8.92(10^3kg/m^3) and the area of the plate is .0962m^2, and i don't see how the thickness is related with the mass. maybe mass/density = volume or something like that

 

[bross7]

Since you have the area of the plate, think about what volume is for the circular plate. Area of the base X height of the plate. you are trying to solve for the height of the plate.
Density = mass/volume
You are given density and mass, so you can solve for volume. By cancelling unit, you are given a volume in m^3

 

[runner1738]

so your saying its 96.1(mass)/8.92(density)=volume then volume/area gives me my answer?

 

[runner1738]

yep i got it right thank you