How Do You Find the Density of a Cylinder?

  • Thread starter westside
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In summary, the individual is a senior high school student who is happy but misses their junior days, especially in chemistry. They are currently struggling with remembering how to find the density of a cylinder using the formula V=\pi r^2 h and are confused about whether or not to multiply r^2 by 2. They also mention the formula for density, D=m/v, and ask for help in finding the answer.
  • #1
westside
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Im a senior high school now and I am so happy. I miss junior days esp. chemistry.
My problem right now is..hmm.. i forgot how to get the density of the cylinder

V=2r2h
thats the formula of the cylinder right?
and I am confuse..
r2=0.200m ->do i have to multiply it 2 times?

thanks you peeps :)
 
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  • #2
westside said:
Im a senior high school now and I am so happy. I miss junior days esp. chemistry.
My problem right now is..hmm.. i forgot how to get the density of the cylinder

V=2r2h
thats the formula of the cylinder right?

The volume of a cylinder is , where r2 means .
 
  • #3
Copy!

For example
V= 10L
r2=0.200m
h=15
=3.14

And the answer is? formula of the density is D=m/v right? how to get it?

:(
 
  • #4
westside said:
Copy!

For example
V= 10L
I presume L means litres.
r2=0.200m
h=15
=3.14

And the answer is? formula of the density is D=m/v right? how to get it?
Well, you could do with knowing the mass of the fluid in the cylinder (I'm just guessing that this is a cylinder with fluid in, mainly due to the L)

It would help if you wrote down the question exactly as worded in your textbook, or wherever it's coming from, to save me from having to guess!
 
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