Question

what is the formula used for area of triangle and area of trapezium

Answer 1

To calculate the area of a trapezium, divide it into a rectangle and two triangles. Now, piece together the triangular ends so that the trapezium is divided into a triangleand rectangle. The base of the triangleis the difference between the lengths of two parallel sides.

May it helps uh!

Answer 2

underroot s ×(s-a)×(s-b)×(s-c)
1÷2 sum of parallel sides ×height