1. Chapter 9 Class 8 Mensuration
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  3. Ex 9.2
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Ex 9.2, 8 - Chapter 9 Class 8 Mensuration

Last updated at Dec. 16, 2024 by Teachoo
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Ex 9.2, 8 The lateral surface area of a hollow cylinder is 4224ใ€– ๐‘๐‘šใ€—^2. It is cut along its height and formed a rectangular sheet of width 33 cm. Find the perimeter of rectangular sheet?Given that Hollow cylinder is converted into a rectangular sheet So, Area of cylinder and sheet must be the same โˆด Curved Surface Area of hollow cylinder = Area of rectangular sheet 4224 = Length ร— Breadth 4224 = ๐‘™ ร— 33 4224/33 = ๐‘™ ๐‘™ = 4224/33 ๐’ = 128 cm Now, Perimeter of sheet = 2 ร— (Length + Breadth) = 2 ร— (128 + 33) = 2 ร— 161 = 322 cm
  1. Chapter 9 Class 8 Mensuration
  2. Serial order wise

    3. Ex 9.2

    Ex 9.3 →
Ex 9.3 →
Chapter 9 Class 8 Mensuration
Serial order wise

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Davneet Singh

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