Question

one cubic metre of a certain metal weighing 900 kg is melted
and then rolled into a bar whose cross section is a square and whose length is 9 metres. An exact cube. is cut off from it find the weight of this cube​

Answer 1

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Question

A cubic metre of copper weighing 9000 kilogram is rolled into a square bar 9 metres long. An exact cube is cut off from the bar. How much does it weigh?

 

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3 years ago, GSDP

1 Answer

Let side of the square be a

Volume =1

a2×9=1a=

1

3

Volume of cube =a3=

1

27

m3

Required weight =9000×

1

27

=333.33 kg