# First moment of area-round shapes.

A complete illustration for the first moment of area, for round shapes. Shapes include circles, tubular shafts, semi-circles.

## 6- Practice problem 5-8. Find the centroid for the shaded area

Practice problem 5-8. Find the centroid for the shaded area. using integration we will find the x bar and y bar of the centroid for a composite shape.

## 5-How to find the area and Cg for a circular segment?

How do you determine the area and Cg for a circular segment? We will deduct the area of two triangles from the area of the circular sector.

## 4-How to find the area and Cg for a circular sector?

How do you determine the area and Cg for a circular sector? Use the integration of small area dA to get the value of the area and the Cg distance.

## 3-How to find the area and Cg for a semi-circle?

How do you determine the area and Cg for a semi-circle? Use the integration of small area dA to get the value of the area and the Cg distance.

## 2- How to find the area and Cg for a circular shaft?

How to determine the area and Cg for a circular shaft? Use the integration of small area dA to get the value of the area and the Cg distance.

## 1- How to find the area and Cg for a circle?

How to determine the area and Cg for a circle? Use the integration of small area dA to get the value of the area and the Cg distance.

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