Question

A beam 4 m long, 50 m wide and 20 m deep is
made of wood, which weighs 25 kg per m cube. Find
the weight of the beam.
​

Answer 1

V=4*50*20
=4000cubic meter
W=25*4000
=100000kg

Answer 2

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☞Volume of beam

= Length × Breadth × height

= (4 × 50 ×20) m³

= 4000 m³

______________________________

☞ Now,

⟹ Weight of beam per m³ = 25 kg

Therefore, weight of beam at 25 kg/m³

= 25 × 4000

= 1,00,000 kg

______________________________

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☞Hence, the weight of beam is 1,00,000 Kg.

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