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Curated by: Khan Academy India - English (24 videos)
Ever wondered why we call it a “cube”? In this video, we dive into the world of cube numbers, beginning with the geometric origin of the term—imagine a 3D cube with equal sides. If each side is n units long, the total number of unit cubes it contains is n× n × n. That’s where cube numbers come from! We explore what makes a number a perfect cube—like 8, 27, or 64—because they result from cubing a whole number. Then we contrast them with non-perfect cubes, numbers like 9 or 50 that don’t have a neat cube root. Along the way, we use visual models and real-world examples to make each idea stick. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-od/x97648b3e69d960e3:square-square-roots-and-cube-cube-roots-odia-class-8 Timestamps: 00:00 What is cube and why the term cube? 02:14 Perfect cubes 04:23 Non-perfect cubes Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Mahak Wasan