A hollow iron pipe is 28 cm long and its external diameter is 10 cm.If – McqOptions

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1.	A hollow iron pipe is 28 cm long and its external diameter is 10 cm.If the thickness of the pipe is 2 cm and iron weighs 5 g/cm3 , then the weight of the pipe is:
A.	7040 g
B.	704 g
C.	74 g
D.	740 g
Answer» B. 704 g

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