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A beam 9m long, 50 cm wide and 20 cm dee...

A beam `9m` long, `50 cm` wide and `20 cm` deep is made of wood which weighs `40` kg per `m^(3)` , find the weight of the beam.

A

36 kg

B

63 kg

C

40 kg

D

39 kg

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The correct Answer is:
A
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