# Example 4 - Chapter 9 Class 8 Algebraic Expressions and Identities

Last updated at Dec. 24, 2018 by Teachoo

Last updated at Dec. 24, 2018 by Teachoo

Transcript

Example 4 (i) Find the volume of each rectangular box with given length, breadth and height. Length = 2ax, Breadth = 3by, Height = 5cz Volume = Length ร Breadth ร Height = 2a๐ฅ ร 3by ร 5cz = 2 ร ๐ ร ๐ฅ ร 3 ร b ร y ร 5 ร c ร z = (2 ร 3 ร 5) ร ( a ร b ร c ร ๐ฅ ร y ร z) = 30abcxyz Example 4 (ii) Find the volume of each rectangular box with given length, breadth and height. Length = ๐^๐ ๐, Breadth = ๐^๐ ๐, Height = ๐^๐ ๐ Volume = Length ร Breadth ร Height = ๐^2 ๐ ร ๐^2 ๐ ร ๐^2 ๐ = ๐^2x ๐ ร ๐^2 ร p ร ๐^2 ร ๐ = (๐^2 ร ๐) ร (๐ ร ๐^2) ร (๐^2x ๐) = ๐^3 ร ๐^3 ร ๐^3 = ๐^๐ ๐^๐ ๐^๐ Example 4 (iii) Find the volume of each rectangular box with given length, breadth and height. (iii) Length = ๐๐ , Breadth = ใ๐๐ใ^๐, Height = ใ๐๐ใ^๐ Volume = Length ร Breadth ร Height = 2๐ ร ใ4๐ใ^2 ร ใ8๐ใ^3 = 2 ร ๐ ร 4 ร ๐^2 ร 8 ร ๐^3 = (2 ร 4 ร 8) ร (๐ ร ๐^2 ร ๐^3) = 64 ร ๐^6 = ๐๐๐^๐

Examples

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Example 2 Important

Example 3

Example 4 You are here

Example 5 (i)

Example 5 (ii)

Example 6 (i) Important

Example 6 (ii)

Example 7 Important

Example 8 (i)

Example 8 (ii)

Example 9 (i) Important

Example 9 (ii)

Example 10 Important

Example 11 (i)

Example 11 (ii)

Example 12 (i)

Example 12 (ii)

Example 13 (i)

Example 13 (ii)

Example 13 (iii)

Example 14 (i)

Example 14 (ii)

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.