According to Quora,

The center of gravity of a trapezoid can be estimated by dividing the trapezoid in two triangles.

Nickzom Calculator calculates the centre of gravity of a trapezium with parallel sides a and b at a distance measured from side b.

The formula for calculating this center of gravity is:

C.G. = ^{h (b + 2a)} / _{3 (b + a)}

Where, a and b are the length of the parallel sides of the trapezium (b being the **base length** and a being the **top length**) whereas h is the height of the trapezium.

Let’s take for **Example: **Find the center of gravity or centroid of a trapezium where a is 4, b is 8 and h is 2.

This implies:

a = 4

b = 8

h = 2

C.G. = ^{2 (8 + 2(4))} / _{3 (8 + 4)}

C.G. = ^{2 (8 + 8)} / _{3 (12)}

C.G. = ^{2 (16)} / _{36}

C.G. = ^{32} / _{36}

C.G. = 0.89

Therefore, the center of gravity or centroid of the trapezium is **0.89**.

To get the answer and workings to **center of gravity** or **centroid **of a trapezium. First, you need to obtain the **Nickzom Calculator – The Calculator Encyclopedia** app.