Home/ Questions/Q 511243
Next
In Process
Ayushree
  • 3
Asked: 2025-08-01T10:19:50+00:00 In:

What number will you multiply by 1323 to make it a cube number?

  • 3

Prime factorisation of 1323 = 3³ × 7². To make it a cube, we need one more 7.
So, multiply by 7.
1323 × 7 = 9261 and 9261 = 21³.
So, required number = 7.

Class 8 Mathematics Textbook Chapter 1 A Square and A Cube question answer

Class 8 Mathematics Chapter 1 A Square and A Cube solutions

a square and a cube class 8 problems and solutionsganita prakash grade 8 a square and a cube solutionsnumber will you multiply by 1323 to make it a cube number
Share

    1 Answer

    1. 1323 = 3³ × 7². For it to be a perfect cube, each prime must occur in multiples of 3.
      We already have 7², so we need one more 7 to make it 7³.
      Therefore, multiply 1323 by 7 to get 3³ × 7³ = (3×7)³ = 21³ = 9261
      Answer: Multiply by 7 and cube root of the result is 21.

       

      For more NCERT Solutions for Class 8 Mathematics Ganita Prakash Chapter 1 A Square and A Cube Extra Questions & Answer:

      https://www.tiwariacademy.com/ncert-solutions/class-8/maths/ganita-prakash-chapter-1/

      • 27
    Leave an answer

    Leave an answer

    Browse