A beam 9m long ,50cm wide , and 20cm deep is made of wood which weights 30kg per m cube , find the weight of the beam
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area of beam = l×b×h
=900×50×20 ( 1m=100cm)
=900×1000
=900000cm^3=0.9m^3
since 1m^3=30kg
so .9m^3 =30×0.9
=27 kg
=900×50×20 ( 1m=100cm)
=900×1000
=900000cm^3=0.9m^3
since 1m^3=30kg
so .9m^3 =30×0.9
=27 kg
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