Question

A hollow cylindrical tube open at both ends is made of iron 3 cm thick. If the external diameter be 56 cm and the length of the tube be 182 cm, find the number of cubic cm in it​

Answer 1

Step-by-step explanation:

Solution

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Volume of cylinder 

Height of cylinder 

External diameter 

 External radius  

Internal radius 

Volume of iron  Vol. of cylinder of radius -Vol. of cylinder of radius .

 cubic cm

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