# First moment of area-plain shapes

A complete illustration for the first moment of area, how to determine the area by the integration? How to get the distance of Cg for a given axis? Plain areas are illustrated.

## 10- Practice problem for the x and y coordinates of a trapezoid

Practice problem for the x and y coordinates of a trapezoid. A step by step guide is given by using two options

## 9- Easy approach to Area and Cg for a Parallelogram.

The post includes the steps needed to get the area and Cg for a Parallelogram. This is done by getting the first moments of areas about two external axes.

## 8- Easy illustration for Area and Cg of a Trapezium.

The post includes the steps needed to get the area and CG of a Trapezium. This is done by getting the first moments of areas about two external axes.

## 7- How to find Area and Cg for a rectangle?

How to determine the area and Cg for a rectangle? The rectangle area and GC values are obtained by integration of infinitesimal area about external axes.

## 6- Easy steps to find the area and Cg of a triangle.

How to determine the area and Cg of a triangle? Divide Triangle into two right-angle triangles and use to find get X bar and y bar for the triangle.

## 5-Y bar for a right angle case-2.

How to estimate y bar for a right angle case-2 by using a horizontal and a vertical strip? the process includes area estimation.

## 4- Easy steps for X bar for a right angle case-2.

How to estimate x bar for a right angle case-2 by using a horizontal and a vertical strip? Detailed steps are included in the post.

## 3a- Y bar for a right angle-case-1-using vertical strip.

How to estimate Y bar for a right angle-case-1-using vertical strip? using the integration to get area and Cg distance.

## 3-How to determine y bar for a right angle-case-1?

How to estimate y bar for a right angle triangle case-1 by using a horizontal strip? There are detailed steps to get the expression for the y bar.

## 2a- X bar for a right angle-case-1-using vertical strip.

How to estimate X bar for a right angle-case-1 by using a vertical strip? step by step guide to get the final expression.

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