Where 𝒓 Radius. A four-sided closed figure in which one pair of parallel sides opposite to each other and another non-pair of non-parallel sides is called a trapezium. Chapter 5 Data Handling Formulas.
Mensuration is the branch of mathematics that studies the measurement of geometric figures and their parameters like length volume shape surface area lateral surface area etc.
Area of rectangle A lengthl Breathb 2. Class 8 Maths Formulas List. Chapter 2 Linear Equations in One Variable Formulas. Basic formulas are for class 6 then a little more added in each section of class 7 class 8 class 9 class 10 and so on.