Semicircle Calculator
A circle is formed by the set of points that are at a constant or at a fixed distance (radius) from a fixed point (center) in the plane.
What is Semicircle Calculator?
'Semicircle Calculator' is an online tool that helps to calculate the area and perimeter of the semi-circle. Online Semicircle Calculator helps you to calculate the area and perimeter of the semi-circle within a few seconds.
Semicircle Calculator
NOTE: Please enter the values up to four digits only.
How to Use Semicircle Calculator?
Please follow the steps below on how to use the calculator:
- Step1: Choose a drop-down list to calculate the area and perimeter of the semicircle.
- Step2: Enter the radius of the semi-circle in the given input box.
- Step3: Click on the "Calculate" button to find the area and perimeter of the semicircle.
- Step4: Click on the "Reset" button to clear the fields and enter new values.
How to Find Semicircle Calculator?
The diameter of a circle divides the circle into two equal semicircles.
The area of the semicircle is defined as the amount of space enclosed within the boundary of a semicircle and it is defined as half of the area of a circle. It is measured in square units. The formula to calculate the area of the semicircle is given by
Area of the semicircle = π r2 / 2 square units
Where 'r is the radius of the semi-circle.
To find the perimeter of a semicircle we need to add the curved section of the semicircle and the length of the diameter at the bottom of the semicircle. The formula to calculate the perimeter of a semicircle is given by
The perimeter of a semi-circle = π r + 2r units
Where 'r is the radius of the semi-circle.
Solved Examples on Semicircle Calculator
Example 1:
Find the area and perimeter of the semicircle if the radius is 5 units?
Solution:
Given: Radius = 5 units
Area of the semicircle = π r2 / 2
= 3.14 × 25 / 2
= 39.27 units
The perimeter of the semicircle = π r + 2 r
= (π × 5) + (2 × 5)
= 15.707 + 10
= 25.71 units.
Example 2:
Find the area and perimeter of the semicircle if the radius is 11 units?
Solution:
Given: Radius = 11 units
Area of the semicircle = π r2 / 2
= 3.14 × 121 / 2
= 189.97 units
The perimeter of the semicircle = π r + 2 r
= (π × 11) + (2 × 11)
= 34.54 + 22
= 56.54 units.
Similarly, you can try the calculator to find the area and perimeter of the semi-circle
- Radius = 8 units
- Radius = 12 units