Question

How do i find the centriod of a trapezium?

Answer 1

Check this out, if you still dont understand, ask me.
http://mathworld.wolfram.com/Trapezoid.html

Answer 2

For any trapezoid with parallel sides a and b (where b is the base) and height h, the centroid is located a distance x above b given by the following formula:

x = [(b+2a) / (3*(a+b))]*h