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Mensuration Class 8 Notes Maths Chapter 9

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FAQs on Mensuration Class 8 Notes Maths Chapter 9

1. What is mensuration in maths?
Ans. Mensuration is a branch of mathematics that deals with the measurement of geometric shapes and figures. It involves calculating the area, perimeter, volume, and surface area of various shapes such as squares, rectangles, circles, triangles, and cubes.
2. How is the perimeter of a square calculated?
Ans. The perimeter of a square is calculated by adding the lengths of all four sides of the square. Since all sides of a square are equal, we can simply multiply the length of one side by 4 to find the perimeter.
3. What is the formula to find the area of a circle?
Ans. The formula to find the area of a circle is A = πr², where A represents the area and r represents the radius of the circle. π is a constant value approximately equal to 3.14.
4. How can we find the volume of a cube?
Ans. The volume of a cube can be found by multiplying the length of one side by itself twice. The formula for the volume of a cube is V = a³, where V represents the volume and a represents the length of one side.
5. How do we calculate the surface area of a rectangular prism?
Ans. To calculate the surface area of a rectangular prism, we need to find the sum of the areas of all six faces. The formula for the surface area of a rectangular prism is SA = 2lw + 2lh + 2wh, where SA represents the surface area, l represents the length, w represents the width, and h represents the height of the prism.
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