Semi Circle Geometry

Introduction :
In geometry, a semicircle is half circle, it is created by the cutting a whole circle by the side of a diameter line. In semi circle, any diameter of a circle is cuts it into the two equivalent semi circles. In geometry, a semi circle is used to construct two lengths using straight-edge and compass. A triangle decorated in the semi circle is always s right triangle.

More about Semicircle:

In geometry, the perimeter of a semicircle is not partially the perimeter of a circle.
So the formula for finding a perimeter of semi circle is, ?R + 2R
The r is defines radius of the semi circle.
The p is Pi, the Pi value is approximately describe 3.142
The final formula for finding the perimeter of the semi circle is,
R (p+2)

Area of a semicircle:

In geometry, the area of a semicircle is half the area circle.
The Formula for finding the area of semicircle is,
In this area of semi circle formula, the R is defines radius of the semicircle.

? is defines exact value 3.142

Example of area of semi circle:
A semicircular shaped doormat has a radius of 12cm.
Find the area of the doormat.
The given R value is 12.


In this area of semi circle formula, the R is defines radius of the semicircle.
? is defines exact value 3.142
Example of area of semi circle:

A semicircular shaped doormat has a radius of 12cm.
Find the area of the doormat.
The given R value is 12.

= 113.04

So, the area of semicircle is 113.04 square cm.


Uses of Semi Circle:

In geometry, the semicircle is mainly used to construct the arithmetic and geometric.
It means the length of two straight edges and compass.
If we would like to generate a semi circle with a diameter of a + b.
The length of semicircle and its radius are half of the diameter.
The geometry is make a diameter into two segments of lengths a and b.
Then those segments are connecting to common with the semi circle perpendicular diameter.