Formulas for Students of Class 8th.
1. Area of Trapezium
-¿ 1/2*Sum of parallel
sides*Distance
between parallel sides.
2. Area of Rectangle -¿ Length*Breadth
3. Perimeter of Rectangle -¿ 2(Length+Breadth)
4. Area of Square -¿ Side*Side
5. Perimeter of Square -¿ 4*Side
6. Area of Genereal Quadrilateral -¿ 1/2*d(h1+h2) ,where ”d” stands for diameter
and ”h1” and ”h2” stands for height first and height sceond.
7. Area of Triangle -¿ 1/2*breadth*height
8. Perimeter of Triangle -¿ Sum of all 3 sides.
9. Area of Quadrilateral -¿ 4*Side*Side
10. Area of Rhombus -¿ 1/2*D1*D2 , where ”D1 and D2” stands for Diameter first and Diameter second.
I will post some more formulas later.
–Mrigendra