Question

A flat circular plate of copper has a radius of 0.262 m and a mass of 61.5 kg.

what is the thickness of the plate?

Answer 1

0.031 m

Step-by-step explanation:

Density of copper = ρ = 8960 kg/m³

r = Radius = 0.262 m

m = Mass of plate = 61.5 kg

v = Volume of plate = Volume of cylinder = πr²h

`\rho=(m)/(v)\\\Rightarrow 8940=(61.5)/(\pi r^2h)\\\Rightarrow h=(61.5)/(\pi 0.262^2* 8940)\\\Rightarrow h=0.031\ m`

So, thickness of plate is 0.031 m