katherinehelly25 katherinehelly25

02-12-2020
Engineering

contestada

HELP!!!
What is the mass of a cylinder of lead that is 2.50 cm in diameter, and 5.50 cm long. The density of lead is 11.4 g/cm3. Volume = h r2 (Show your work)

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ackahedem582 ackahedem582

02-12-2020

Density of cylinder = 11.4g/cm3

Volume of cylinder = h r2

but height (h) = 5.50cm

radius(r) = d/2 = 2.50/2 = 1.25cm

Hence Volume = 5.50 × (1.25)2

= 8.6cm3

Density = Mass/Volume

Hence Mass of the cylinder =

Density × Volume

Mass = 11.4 × 8.6 = 94.04g.

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