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Slide9.JPG

  1. Chapter 11 Class 8 Mensuration
  2. Serial order wise

Transcript

Ex 11.3, 3 Find the side of a cube whose surface area is 600 ใ€–๐‘๐‘šใ€—^2. Given, Surface area of cube = 600 ใ€–๐‘๐‘šใ€—^2 Let side of cube = ๐‘ฅ cm Thus, Surface area = 6 ร— (Side)2 600 = 6 ร— ๐‘ฅ^2 600/6 = ๐‘ฅ^2 100 = ๐‘ฅ^2 ๐‘ฅ^2 = 100 ๐‘ฅ = โˆš100 ๐‘ฅ = โˆš(ใ€–10ใ€—^2 ) ๐‘ฅ = 10 ๐‘๐‘š โˆด Side of cube = 10 cm

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.