A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thick – OfficerPath

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MCQ Practice

A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weights 8 g/cm 3 , then the weight of the pipe is:

Subject: MathematicsTopic: Volume And Surface Area

A

3.6 kg

B

3.696 kg

C

36 kg

D

36.9 kg

Correct Answer: B

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