The image above is a **semicircle **with a radius of 7 cm.

To compute the centroid or centre of gravity of a semicircle, you need one essential parameter and this parameter is the radius of the semicircle.

The formula for calculating the centroid or centre of gravity of a semicircle is:

C.G.= ^{4r} / _{3π}

Where:

r = Radius of the Semicircle

π = Mathematical Constant = 3.142 (approximately)

Let’s solve an example:

Find the centroid or centre of gravity of a semicircle where the radius is 7 cm.

From the example above,

r = radius of the semicircle = 7

C.G. = ^{4(7)} / _{3π}

C.G. = ^{28} / _{9.4247}

C.G. = 2.97

Therefore, the **centroid or centre of gravity of the semicircle** is **2.97**.

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the centre of gravity of a semicircle at a distance from its base measured along the vertical radius.

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