# Centroid of Semi-circle

Half circle is known as semi-circle. Centroid of semi-circle is at a distance of 4R/3π
from the base of semi-circle. As shown in the figure below:

## Centroid of Semi-circle Formula:

$$\bar{Y}= \frac{4R}{3π }$$

## Example

Find the centroid of semi-circle whose radius is 10cm and of 20cm diameter.

Centroid of semi circle example

### Solution

By using formula for semi-circle
Centroid of semi-circle = 4R/3π = (4*10)/3π = 4.24cm = Answer

This distance is from the base line of semi circle.