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Same? 3. A 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©- 'inner curved surface area,outer curved surface area,(iii) total surface area. BAtao |
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Answer» inner curved area =967.12cm²outer. 1063.832cm²total SURFACE area =93.016cm²Step-by-step explanation:given LENGTH = 77CM inner radius 2CM inner curved Surface of area of PIPE =2πr =2×3.14×2×77 =967.12cm²Outer curved surface area 2πrl =2×3.14×2.2×77 =1063.832cm²total surface area =base area +curved surface area =2πr(r+h) =2×3.14×2.2(2.2+77) =13.86×79.2 =93.016cm² |
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