Ex 6.1, 2 (iii) - Chapter 6 Class 8 Cubes and Cube Roots
Last updated at Dec. 16, 2024 by Teachoo
Ex 6.1
Ex 6.1, 1 (i)
You are here
You are here
Transcript
Ex 6.1, 2 Find the smallest number by which each of the following numbers must be multiplied to obtain a perfect cube. (iii) 72 We see that 72 = 2 × 2 × 2 × 3 × 3 Since 3 does not occur in triplets, ∴ 72 is not a perfect cube. So, we multiply by 3 to make triplet So, our number becomes 72 × 3 = 2 × 2 × 2 × 3 × 3 × 3 Now, it becomes a perfect cube. So, we multiply 72 by 3 to make it a perfect cube
