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The formula for perimeter varies based on what object you are trying to determine the perimeter for.
If you are looking for the perimeter of a perfect square you simply take the length of one side and multiply it by four.
If you are looking for the perimeter of a rectangle with length (a) and width (b) you would multiple the length (a) by two and the width (b) by two and add them together. Perimeter = 2a + 2b
If you are looking for the perimeter of a rectangle you add up the lengths of all the sides.
To find the perimeter of a circle you multiple the radius by 2pi. pi = 3.14159265
the perimeter = 2 * 3.14159265 * r
Or if you have the diameter of the circle you would just have to multiply the diameter by pi. So, perimeter = 3.14159265 * d
Radius is the length of a line that goes from the middle of a circle to the edge of the circle.
Diameter is the length of a line that goes from one edge of a through the middle to another edge of the circle.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoIts P= A+B+c where A, B and C are the sides of the triangle and P = the perimeter
example
side a=12cm, side b=12cm and side c= 20cm
therefore 12+12+20 = (P) 44cm (centimetres)
Wiki User
∙ 8y agoIf it is a regular octagon, all sides are of equal length, so multiply the length of one side by 8 to get the perimeter.
For an irregular octagon add together the length of each of the eight sides to get the perimeter.
Wiki User
∙ 12y agofor polygons, add up the lengths of all the sides. for circles, multiply the diameter of the circle squared by pi (3.14)
Wiki User
∙ 14y agoIf you double its length and double its width and add those two amounts together you have the perimeter.
Wiki User
∙ 11y agoWiki User
∙ 14y agocheck 1 side x 5
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What is the length of a rectangle that its perimeter is 30?
The perimeter of a rectangle is not sufficient to determine its length.
What is the perimeter of a 40 acre rectangle of land?
Any length greater than 1 mile. The area of a rectangle is not sufficient to determine its perimeter.
What is the perimeter of a rectangle when the square root is 36cm?
The area of a rectangle is not enough information to determine its shape (thin and narrow or fat and short) and therefore its perimeter.
The perimeter of the rectangle?
what is the perimeter of the rectangle
How do you determine the area and perimeter of a rectangle?
for area we should multiple length X breadth for perimeter we should do 2x(LxB)
How do you determine the area of a rectangle if you know the perimeter?
You can't. The perimeter doesn't tell the area. There are an infinite number of shapes with different dimensions and different areas that all have the same perimeter.
How do you find the perimeter of a triangle with the perimeter of a rectangle?
There is no reason for the perimeter of a triangle to have any relation to the perimeter of an unrelated rectangle!
If BC16.5 and CD4.5 what is the perimeter of the rectangle?
The perimeter of the rectangle is 42 units
What is the perimeter of a rectangle if ti's area is 15ft?
The area cannot be 15 feet since that is a measure of length, not area. In any case, information about the area cannot determine the perimeter; it can only put a lower limit on it. The perimeter can be anyhting from 15.49193 ft upwards. Consider the following rectangles, all with area = 15 square feet: a sqrt(15)*sqrt(15) rectangle will have a perimeter of 4*sqrt(15) = 15.49193 ft (approx). 1ft*15ft rectangle will have a perimeter of 32 feet 0.1ft*150ft rectangle: perimeter = 300.2 feet 0.01ft*1500ft rectangle: perimeter = 3000.02 ft 0.001ft*15000ft rectangle: perimeter = 30000.002 ft by now you should see that there is no upper limit to the perimeter.
What is the perimeter of a rectangle that has an area of 18?
That depends on the dimensions !... A 1 x 18 rectangle has a perimeter of 38 ! A 2 x 9 rectangle has a perimeter of 22 ! A 3 x 6 rectangle has a perimeter of 18 !
What is the perimeter of a rectangle with an area of 24cm?
The perimeter of the rectangle is the sum of its 4 sides.
How to find a perimeter of the rectangle?
the perimeter of a rectangle is calculated by : 2*(l+b)
