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The inner and outer radii of a 7 m long ...

The inner and outer radii of a 7 m long hollow iron right circular cylindrical pipe are 2 cm and 4 cm respectively. If `1000 cm^3` of iron weighs 5 kg, what is the weight of the pipe ?

A

264 kg

B

132 kg

C

396 kg

D

None of the abovee

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