Students can go through AP 6th Class Maths Notes Chapter 10 Mensuration to understand and remember the concepts easily.
Class 6 Maths Chapter 10 Notes Mensuration
→ Perimeter is the distance covered along the boundary forming a closed figure when you go around the figure once.
→
- Perimeter of a rectangle = 2 × (length + breadth)
- Perimeter of a square = 4 × length of its side
- Perimeter of an equilateral triangle = 3 × length of any side
→
- Figures in which all sides and angles are equal are called regular closed figures,
- The perimeter of a regular figure is equal to the number of sides multiplied by the length of each side.
→ The amount of surface enclosed by a closed figure is called its area.
→ To calculate the area of a figure using a squared paper, the following conventions are adopted.
- Ignore portions of the area that are less than half a square.
- If more than half a square is in the region, count it as one square.
- If exactly half the square is covered, take its area as 1/2 sq. units.
→
- Area of a rectangle = length × breadth
- Area of a square = side × side
- The area of a square is more than the area of any other rectangle having the same perimeter.