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[" 3.A metal pipe is "77cm" long.The inn...

[" 3.A metal pipe is "77cm" long.The inner diameter of a cross "],[" section is "4cm" ,the outer diameter being "4.4cm],[" (see Fig."13.11" ).Find its "],[[" (i) inner curved surface area,"," b "],[" (ii) outer curved surface area,"],[" (iii) total surface area."]],[" (iii) total surface area."]

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A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4 cm (see Fig. 13.11). Find its (i) inner curved surface area, (ii) outer curved surface area, Assume pi = 22/7 , unless stated otherwise.

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