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Ex 7.2, 1 (ix) - Chapter 7 Class 8 Cubes and Cube Roots
Last updated at March 31, 2023 by Teachoo
Ex 7.2
Ex 7.2, 1 (i)
Ex 7.2, 1 (ii) Important
Ex 7.2, 1 (iii)
Ex 7.2, 1 (iv) Important
Ex 7.2, 1 (v)
Ex 7.2, 1 (vi)
Ex 7.2, 1 (vii) Important
Ex 7.2, 1 (viii)
Ex 7.2, 1 (ix) Important You are here
Ex 7.2, 1 (x)
Ex 7.2, 2 (i)
Ex 7.2, 2 (ii) Important
Ex 7.2, 2 (iii)
Ex 7.2, 2 (iv)
Ex 7.2, 2 (v) Important
Ex 7.2, 2 (vi) Important
Ex 7.2, 2 (vii)
Ex 7.2, 3 Important
Transcript
Ex 7.2, 1 Find the cube root of each of the following numbers by prime factorisation method. (ix) 175616We see that 175616 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 7 Since all factors occur in triplets ∴ 46656 is a perfect cube. Cube root of 46656 = 2 × 2 × 2 × 7 = 4 × 14 = 56
