RS Aggarwal Solutions for Class 8 Maths Chapter 4 Exercise 4.3: Using RS Aggarwal Solutions for Class 8 Maths Chapter 4 Exercise 4.3 students can gain a clear understanding of cubes and cube roots.
This exercise provide detailed solutions to help students master these concepts. Each problem is solved step-by-step providing clarity on how to approach and solve cube-related questions. By working through these solutions students can enhance their problem-solving skills, address any confusion and strengthen their grasp of the material. These solutions are designed to support students in improving their performance and achieving better results in their exams.RS Aggarwal Solutions for Class 8 Maths Chapter 4 Exercise 4.3 PDF
Question 1: Find the cube root of 64.
Solution:
To find the cube root of 64, we use prime factorization: 64 = 2 × 2 × 2 × 2 × 2 × 2 = (2 × 2 × 2) × (2 × 2 × 2) So, ³√64 = ³√(2³ × 2³) = 2 × 2 = 4Question 2: Find the cube root of 343.
Solution:
To find the cube root of 343, we use prime factorization: 343 = 7 × 7 × 7 = 7³ So, ³√343 = ³√(7³) = 7Question 3: Find the cube root of 729.
Solution:
To find the cube root of 729, we use prime factorization: 729 = 3 × 3 × 3 × 3 × 3 × 3 = (3 × 3 × 3) × (3 × 3 × 3) So, ³√729 = ³√(3³ × 3³) = 3 × 3 = 9Question 4: Find the cube root of 1728.
Solution:
To find the cube root of 1728, we use prime factorization: 1728 = 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 = (2 × 2 × 2) × (2 × 2 × 2) × (3 × 3 × 3) So, ³√1728 = ³√(2³ × 2³ × 3³) = 2 × 2 × 3 = 12Question 5: Find the cube root of 9261.
Solution:
To find the cube root of 9261, we use prime factorization: 9261 = 3 × 3 × 3 × 7 × 7 × 7 = (3 × 3 × 3) × (7 × 7 × 7) So, ³√9261 = ³√(3³ × 7³) = 3 × 7 = 21Question 6: Find the cube root of 4096.
Solution:
To find the cube root of 4096, we use prime factorization: 4096 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 = (2 × 2 × 2 × 2) × (2 × 2 × 2 × 2) × (2 × 2 × 2 × 2) So, ³√4096 = ³√(2⁴ × 2⁴ × 2⁴) = 2 × 2 × 2 = 16Question 7: Find the cube root of 8000.
Solution:
To find the cube root of 8000, we use prime factorization: 8000 = 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 = (2 × 2 × 2) × (2 × 2 × 2) × (5 × 5 × 5) So, ³√8000 = ³√(2³ × 2³ × 5³) = 2 × 2 × 5 = 20Question 8: Find the cube root of 3375.
Solution:
To find the cube root of 3375, we use prime factorization: 3375 = 3 × 3 × 3 × 5 × 5 × 5 = (3 × 3 × 3) × (5 × 5 × 5) So, ³√3375 = ³√(3³ × 5³) = 3 × 5 = 15Question 9: Find the cube root of -216.
Solution:
To find the cube root of -216, we use prime factorization: -216 = -(2 × 2 × 2 × 3 × 3 × 3) = -(2 × 2 × 2) × (3 × 3 × 3) So, ³√-216 = ³√[-(2³ × 3³)] = -(2 × 3) = -6Question 10: Find the cube root of -512.
Solution:
To find the cube root of -512, we use prime factorization: -512 = -(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2) = -(2³ × 2³ × 2³) So, ³√-512 = ³√[-(2³ × 2³ × 2³)] = -2Question 11: Find the cube root of -1331.
Solution:
To find the cube root of -1331, we use prime factorization: -1331 = -(11 × 11 × 11) = -11³ So, ³√-1331 = ³√[-(11³)] = -11Question 12: Find the cube root of -27/64.
Solution:
To find the cube root of -27/64, we use prime factorization: -27/64 = -(3 × 3 × 3) / (4 × 4 × 4) = -(3³) / (4³) So, ³√(-27/64) = ³√[-(3³) / (4³)] = -3/4Question 13: Find the cube root of -125/216.
Solution:
To find the cube root of -125/216, we use prime factorization: -125/216 = -(5 × 5 × 5) / (6 × 6 × 6) = -(5³) / (6³) So, ³√(-125/216) = ³√[-(5³) / (6³)] = -5/6Question 14: Find the cube root of -27/225.
Solution:
To find the cube root of -27/225, we use prime factorization: -27/225 = -(3 × 3 × 3) / (15 × 15 × 15) = -(3³) / (15³) So, ³√(-27/225) = ³√[-(3³) / (15³)] = -3/15 = -1/5Question 15: Find the cube root of -64/343.
Solution:
To find the cube root of -64/343, we use prime factorization: -64/343 = -(4 × 4 × 4) / (7 × 7 × 7) = -(4³) / (7³) So, ³√(-64/343) = ³√[-(4³) / (7³)] = -4/7Question 16: Find the cube root of 64 * 729.
Solution:
To find the cube root of 64 * 729, we use prime factorization: 64 = 2 × 2 × 2 × 2 × 2 × 2 = (2³) × (2³) 729 = 3 × 3 × 3 × 3 × 3 × 3 = (3³) × (3³) So, 64 * 729 = (2³) × (2³) × (3³) × (3³) ³√(64 * 729) = ³√[(2³) × (2³) × (3³) × (3³)] = 2 × 2 × 3 × 3 = 36Question 17: Find the cube root of 729/1000.
Solution:
To find the cube root of 729/1000, we use prime factorization: 729/1000 = (3 × 3 × 3 × 3 × 3 × 3) / (10 × 10 × 10) = (3³) / (10³) So, ³√(729/1000) = ³√[(3³) / (10³)] = 3/10