(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

rho of a hollow cylinder can be found with 4 measured quantity by the folowing formula, proof this formula

2. Relevant equations

ρ= 4.m

∏.(d²-D²).h

d is the outside diameter and D the inside

3. The attempt at a solution

since it's my first time ever taking physics classes i'm kinda stuck

(well first time taking science classes)

ρ=m

V

so the formula of the hollow cylinder is V=∏.(d²-D²).h

the 4.m should be the mass but don't realy get what the 4 is standing there for

Could someone explain me how i should solve this ore give me a helping hand with the beginning of it?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Rho hollow cylinder

**Physics Forums | Science Articles, Homework Help, Discussion**