Ask Experts Questions for FREE Help !
Ask
    karivina's Avatar
    karivina Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 28, 2011, 08:33 PM
    How to calculate perimeter of a semi circle
    A semi circle with diameter 12cm so how to calculate the perimeter
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
    		  
    #2

    Sep 28, 2011, 11:48 PM
    Perimeter = Length of curved surface + Diameter

    To get the length of the curved surface, use the formula to get the circumference of a circle and divide the circumference that you get by 2.
    matheditor's Avatar
    matheditor Posts: 1, Reputation: 1
    New Member
    		  
    #3

    Sep 29, 2011, 12:45 AM
    Perimeter of a circle is called circumference and it is expressed by the formula:
    C (circumference)=2*pi*r, where r is the radius of the circle and pi is the pythagorean constant = 3.14...
    You want to determine the perimeter of a semicircle, therefore you must divide the circumference by 2:
    C = 2*pi*r/2
    C = pi*r
    Answer: Semi circle circumference = pi*r
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Calculate area from perimeter [ 4 Answers ]

Suppose I have a blueprint of a house that has many walls (some straight, some indented, etc.). I have the measurements of the lengths of all walls, all around the house. I assume that if I add all the measurements together, I get the perimeter, right? How do I figure out the square footage of...

How to calculate the perimeter and area of a house [ 2 Answers ]

How will you find the perimeter and area of a house

Calculate perimeter of circle segment [ 1 Answers ]

If the perimeter of a circle with a 1/4 section taken out is 20cm, how do you calculate the radius?

Determining Equal Areas of a Semi-Circle [ 4 Answers ]

Here's another circle problem which might interest you. It takes some thought but is not that hard. Perform the following steps: 1. Draw a circle whose radius = 1. 2. Draw a chord of the circle parallel to the X-axis, attempting to divide the semi-circle's area in half.

View more questions Search