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Cubes & Cubes Roots - 3 Video Lecture - Class 8

FAQs on Cubes & Cubes Roots - 3 Video Lecture - Class 8

1. What is a cube in mathematics?
Ans. A cube in mathematics refers to a three-dimensional figure with six equal square faces. It is formed by multiplying a number by itself twice, represented as n^3.
2. How do you find the cube of a number?
Ans. To find the cube of a number, you need to multiply the number by itself twice. For example, to find the cube of 2, you would multiply 2 by 2 and then by 2 again, resulting in 8 (2^3 = 2 x 2 x 2 = 8).
3. What is a cube root in mathematics?
Ans. A cube root in mathematics is the value that, when multiplied by itself twice, gives the original number. It is denoted by the symbol ∛. For example, the cube root of 8 is 2 (∛8 = 2) because 2 x 2 x 2 = 8.
4. How do you find the cube root of a number?
Ans. To find the cube root of a number, you can use a scientific calculator or estimation methods. If using a calculator, enter the number and use the cube root function (∛) to obtain the result. For estimation, you can guess and check different values until you find a value that, when multiplied by itself twice, is closest to the original number.
5. What are the applications of cubes and cube roots in real life?
Ans. Cubes and cube roots have various applications in real life, such as in architecture and construction for measuring volume and dimensions of objects. They are also used in engineering for calculations involving three-dimensional objects. Additionally, they are essential in mathematics and physics for solving equations and understanding geometric concepts.
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