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What is the mass of a cylindrical rod that has a diameter of 2.00 cm, height...

What is the mass of a cylindrical rod that has a diameter of 2.00 cm, height of 10.00 cm and a density of 11.35 g/cm3? Use 5 significant digits in your answer.

Given C= πd, A = πr2 , and V= πr2h

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Answer #1

Formula

Density = Mass / Volume

Given,

height(h) = 10 cm

radius(r) = (diameter / 2 ) = (2 cm /2 ) = 1 cm

Volume = πr2h

= Volume =  π × ( 1 cm )2 × (10 cm) = 31.4 cm3

density = 11.35 g/cm3

volume = 31.4 cm3

we know,

density = mass / volume

= mass = density × volume

= mass = 11.35 g/cm3 × 31.4 cm3

= mass = 356.39 g

Hence, the mass of the cylinder rod = 356.39 g

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