What is the mass of a cylinder of lead that is 1.80 in in diameter, and 4.12 in long. The density of lead is 11.4 g/mL.

124.26g

Explanation:

Diameter  = 1.80 , length (h) = 4.12 , density = 11.4

Density = mass / volume

Volume = area x height

Area = #d2 ➗ 4

Where #(pi) = 3.142

Area = 3.142 x 1.80 square ➗ 4

Area = 10.2/4 = 2.6

Volume = area x height

Volume = 2.6 x 4.2=10.9

Density = mass / vol

Mass = density x vol

Mass = 11.4 x 10.9

Mass 124.26g

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i do not get it   at all

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