Question

a beam 9 M long 50 cm wide and 20 CM deep is made up of wood which weight 30 kg per metre cube find the weight of the beam

Answer 1

Hi friend,

Here is your answer,
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Length of beam = 9m
                          = 900 cm

Breadth of beam = 50 cm

Height of beam = 20 cm

Volume of beam = 900*50*20
                           = 900000 cm³
                           = 0.9 m³

Weight per meter cube = 30 kg

Weight of the beam = 30 * 0.9
                                = 27 kg
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Answer 2

Length of beam = 9m
= 900 cm

Breadth of beam = 50 cm

Height of beam = 20 cm

Volume of beam = 900*50*20
= 900000 cm³
= 0.9 m³

Weight per meter cube = 30 kg

Weight of the beam = 30 * 0.9
= 27 kg