To Know More About Square Roots And Cube Roots Of Class 8 Mathematics

Meaning of square roots and cube roots

Square roots and cube roots are the most important topic in maths. To find the square root of any number, we need to find the number which is multiplied twice by itself then it gives the original number. Similarly, to find the cube roots of any number we need to find a number which is multiplied three times by itself then it gives the original number. The symbol of square root is <strong>√.

Uses of square roots and cube roots

Square root and cube root are used to find missing dimensions of cylinder, cones, spheres. There are many uses of squares like we can calculate the number and the other things and there are much more uses are there. Logical square numbers are applied to physical geometrical construction.

Square number

If a number is multiplied twice by itself then it is known as a square number. Here we are showing the square of a number by geometrical operation.

2²=4: We took a square shape of length 2cm, breadth 2cm and we drew lines on it horizontally and vertically at each other 1cm. Flooded the paper along the horizontal and vertical lines we get many squares so it is observed as 4. Therefore, the square of 2 is 4.

3²=9, 4²=16, 5²=25: The process applied above is again applied for their square numbers. We take a square shape paper which is equal to the number. At each 1cm we draw horizontal and vertical lines and fit along these lines then we get the square of that number so the square of the number is a two dimensional.

Some cube numbers: 1³=1, 2³-8, 3³=27, 4⁴=64

A cube is a solid figure with six identical spheres for finding the cube of a number. We made it on equal sides. For 2³ a cube of 2 units side is made 3³ cube of 3 units is made 3³ as a cube of 3 units side is made. 1unit cubes are interested in above cubes are made counting the unit cubes we get the cube of given number.

Conclusion

This is some of the information of square roots and cube roots which is very important. By this we can understand that a number is multiplied twice by itself. A cubic number is multiplied three times by itself.