Ex 11.2, 8 - Chapter 13 Class 9 Surface Areas and Volumes (Important Question)

Last updated at April 16, 2024 by

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Ex 11.2, 8 A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5 cm. Find the outer curved surface area of the bowl. We need to find outer curved surface area hence we need to be find Outer Radius Given Inner radius = 5 cm Hence Outer radius = r = 5 + 0.25 cm = 5.25cm Outer curved surface = 2 2 = (2 22/7 5.25 5.25) cm2 = 173.25 cm2

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo