Class 8 NCERT (CBSE and ICSE) Area and Perimeter
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11. Mensuration
11.1. Standard Units of Area
11.2. Area and Perimeter
11.2.1. Area and Perimeter of a Square
11.2.3. Area of 4 Walls of a Room
11.2.4. Area between Two Rectangles
11.2.5. Area and Perimeter of Triangles
11.2.9. Area of a Trapezium
11.2.10. Area of Polygon
11.3. Volume and Surface Area
14. Factorization