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1]A contractor agrees to dig a basement 8mx6mx3m.How many cubic meters of earth will be taken out?

2]A rectangular sheet of paper of dimensions 25cmx14cm is revolved along its width to form a cylinder.Find the volume of the cylinder so formed.

3]A HOLLOW CYLINDRICAL PIPE IS 1.4m long.Its outer and inner diameters are cm and cm respectively.Find the volume of the metal used in making pipe.

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third question - what are the diameters?

12cm and 10cm

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