Denebel
Find the radius of an aluminum cylinder that is 2.00 cm long and has a mass of 12.4 g.
V = pi* r^2 * l



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hartnn
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incomplete information
radius is not given
mass is useless in finding Volume

zzr0ck3r
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what is the density of aluminum?

zzr0ck3r
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v = m/d
m/d = pi*r^2*l
r = sqrt((m/(d*pi*l))

Denebel
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Thank you very much @zzr0ck3r lol I never thought about looking that info up.

hartnn
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but density is also not given...

zzr0ck3r
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its known

zzr0ck3r
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this is prob a physics class not math

zzr0ck3r
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they say aluminum for a reason:)