Ex 6.2, 1 (x) - Chapter 6 Class 8 Cubes and Cube Roots

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Ex 6.2, 1 - Find cube root of 91125 by prime factorisation method - Ex 6.2

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Ex 6.2, 1 Find the cube root of each of the following numbers by prime factorisation method. (x) 91125We see that 91125 = 3 × 3 × 3 × 3 × 3 × 3 × 5 × 5 × 5 Since 3 & 5 occur in triplets ∴ 91125 is a perfect cube. Cube root of 91125 = 3 × 3 × 5 = 9 × 5 = 45

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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