1.

A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4 cm.(i) Inner curved surface area,(ii) Outer curved surface area,(iii) Total surface area.

Answer»

A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4 cm.





(i) Inner curved surface area,



(ii) Outer curved surface area,



(iii) Total surface area.



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