Question

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

Answer 1

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

Answer 2

what is the density of aluminum?

Answer 3

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

Answer 4

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

Answer 5

but density is also not given...

Answer 6

its known

Answer 7

this is prob a physics class not math

Answer 8

they say aluminum for a reason:)