Question

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An iron pipe is 21m long and the internal diameter is 6 cm. If the thickness is 1 cm. And the iron weigh 9 gm/cm³. Find the weight of the pipe.​

Answer 1

[tex]Volume of iron =π(R2−r2)×h

=π(42−32)×21

=722×(16−9)×21

=462cm2

Weight =10008×462kg=3.696kg

Answer 2

Answer:

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