eA metal pipe is 77 cm long. The inner diameter of a crosssection is 4 – InterviewSolution

1.

eA metal pipe is 77 cm long. The inner diameter of a crosssection is 4 cm, the outer diameter being 4.4 cm(see Fig. 13.11). Find its(1) inner curved surface area,(ii) outer curved surface area,(iii) total surface area.Amatele

Answer»

total area=Πr²h +2Πr

total area= πr²h+2πr

total area =πr²h +2πr

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