Prime factorise 9408: 2⁶ × 3 × 7 × 7. To make it a perfect square, we need another 3. Multiply by 3 → 9408 × 3 = 28224. √28224 = 168. So, the smallest multiplier is 3. Class 8 Mathematics ...
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The least common multiple (LCM) of 4, 9 and 10 is 180. The smallest square divisible by 180 is 900, since 30² = 900. So, the required smallest square number divisible by 4, 9 and 10 is 900. Class 8 Mathematics ...
To find the side, take the square root of 441. Since 21 × 21 = 441, the side length of the square is 21 meters. So, the side is 21 m. Class 8 NCERT Ganita Prakash Chapter 1 A Square and ...
Use identity: a³ – b³ = (a–b)(a² + ab + b²), a² – b² = (a–b)(a + b). (i) has largest numbers and cube difference. So, 67³ – 66³ is the greatest. Class 8 Mathematics Ganita Prakash A Square and A ...
Yes: 1331 → 11³ 4913 → 17³ 12167 → 23³ 32768 → 32³ The cube roots are guessed by memorising cube tables or checking ending digits and nearby cube ranges. Class 8 Mathematics Textbook Chapter 1 A Square and A Cube ...