Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 29, 2023

Semicircle Perimeter Calculator available here makes your calculations easy and simple. It takes the input as radius of semicircle and produces the exact output within no time.

Area of a Semicircle Calculator

Semicircle Radius

Formula for Semicircle Perimeter

The universal formula to calculate the perimeter of a semicircle is provided here.

Perimeter of Semicircle = (π + 2) * r

Where, r is the radius of the semicircle.

How to solve Perimeter of a Semicircle?

Following the simple steps to solve the semicircle perimeter effortlessly in less amount of time. Check out them and follow whenever required.

  • Take the radius of semicircle.
  • The formula to check the Perimeter of Semicircle is Perimeter = (π + 2) * radius.
  • Substitute the given radius value in the above formula.
  • Also, put π values as 3.14 in the formula.
  • Simplify the obtain expression to get the perimeter.

Example of Calculating Perimeter of Semicircle

Question: Find perimeter of a semicircle of radius 24 cm?


Given that,

Radius of semicircle (r) = 24 cm

Perimeter of a Semicircle = (π + 2) * r

Put the radius value in the formula.

Perimeter = (π + 2) * 24

Substitute constant π value in the above equation

Perimeter = (3.14 + 2) * 24

= 5.14 * 24

= 123.36

∴ Semicircle perimeter of radius 24 cm is 123.36 cm.

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Frequently Asked Questions on Semicircle Perimeter

1. How do you define perimeter of a semicircle?

Semicircle is formed when a line passing through the center and that joins two ends on a circle. Perimeter of a semicircle is the sum of the half of the circumference of circle and its diameter. As we know that, perimeter of circle is 2πr or πd. So, perimeter of a semicircle is 1/2 (πd) +d or πr +2r. Formula is

Perimeter of a Semicircle = d (1/2 π + 1) or r (π + 1)

Where, r is the radius and d is the diameter.

2. What is the perimeter of a semicircle with a diameter of 12 cm?

Given diameter of semicircle = 12 cm

Semicircle Perimeter = 1/2 (πd) +d

= 1/2 (π * 12) + 12

= 6 * π + 12

= 6 * 3.14 + 12

= 18.84 + 12 = 30.84

Perimeter = 30.84

3. Where can I get the process to find the perimeter of semicircle?

You can find the detailed procedure to find the semicircle perimeter by knowing radius on our page.