Volumes Practice Test 1

Question : 10 of 40

Marks: +1, -0

A beam 9m long, 22.5 cm thick and 20 cm high is made up of iron which weighs 50

kg\/m^3

. Find
the weight of the beam.

Solution:

Volume of the iron beam = 9 ×

{22.5}/{100} × {20}/{100}

= 0.405

m^3

Hence, weight of the beam = 0.405 × 50kg = 20.25 kg

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