Ex 6.1, 3 (i) - Chapter 6 Class 8 Cubes and Cube Roots
Last updated at Dec. 16, 2024 by Teachoo
Last updated at Dec. 16, 2024 by Teachoo
Ex 6.1, 3 Find the smallest number by which each of the following numbers must be divided to obtain a perfect cube. (i) 81 We see that 81 = 3 × 3 × 3 × 3 Since 3 does not occur in triplets, ∴ 81 is not a perfect cube. So, we divide by 3 to make triplet So, our number becomes 81 × 𝟏/𝟑 = 3 × 3 × 3 × 3 × 𝟏/𝟑 = 3 × 3 × 3 Now, it becomes a perfect cube. So, we divide 81 by 3 to make it a perfect cube
Ex 6.1
Ex 6.1, 1 (ii)
Ex 6.1, 1 (iii) Important
Ex 6.1, 1 (iv)
Ex 6.1, 1 (v) Important
Ex 6.1, 2 (i)
Ex 6.1, 2 (ii) Important
Ex 6.1, 2 (iii)
Ex 6.1, 2 (iv) Important
Ex 6.1, 2 (v)
Ex 6.1, 3 (i) Important You are here
Ex 6.1, 3 (ii)
Ex 6.1, 3 (iii)
Ex 6.1, 3 (iv) Important
Ex 6.1, 3 (v)
Ex 6.1, 4 Important
About the Author
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