You cannot. You must know, or be able to derive, the length.
If you do not know the length and width of ALL sides, then as far as I know it isn't possible to find the perimeter unless you measure each side and then find it.
To find the ratio of the length of a shape to its perimeter, you would divide the length by the perimeter. For example, if the length of a rectangle is 4 units and its perimeter is 12 units, the ratio would be 4/12 or 1/3. This ratio represents the proportion of the length to the total distance around the shape.
perimeter = 2 x (length + width) ⇒ length + width = perimeter ÷ 2 ⇒ length = (perimeter ÷ 2) - width So to find the length of the given rectangle, subtract the width from half the perimeter is how to do it. IF you meant "What is the length..." then: length = perimeter ÷ 2 - width = 40 ÷ 2 - 2 in = 20 - 2 in = 18 in
Length + length + width + width = perimeter. Length + width x 2 = perimeter
To find the perimeter of a rectangle, you need both the length and the width. If you only have one dimension, such as 18 inches, you cannot determine the perimeter without knowing the other dimension. The formula for the perimeter (P) is P = 2(length + width). If you provide either the length or width, I can help you calculate the perimeter.
If you do not know the length and width of ALL sides, then as far as I know it isn't possible to find the perimeter unless you measure each side and then find it.
To find the ratio of the length of a shape to its perimeter, you would divide the length by the perimeter. For example, if the length of a rectangle is 4 units and its perimeter is 12 units, the ratio would be 4/12 or 1/3. This ratio represents the proportion of the length to the total distance around the shape.
width = (perimeter-2*length)/2
perimeter = 2 x (length + width) ⇒ length + width = perimeter ÷ 2 ⇒ length = (perimeter ÷ 2) - width So to find the length of the given rectangle, subtract the width from half the perimeter is how to do it. IF you meant "What is the length..." then: length = perimeter ÷ 2 - width = 40 ÷ 2 - 2 in = 20 - 2 in = 18 in
Length + length + width + width = perimeter. Length + width x 2 = perimeter
To find the perimeter of a rectangle, you need both the length and the width. If you only have one dimension, such as 18 inches, you cannot determine the perimeter without knowing the other dimension. The formula for the perimeter (P) is P = 2(length + width). If you provide either the length or width, I can help you calculate the perimeter.
Perimeter = 2 * width + 2 * length, so rearranging --> width = (Perimeter / 2) - length
If the shape is a rectangle (or square), then Perimeter = 2*(Length + Breadth) So Breadth = Perimeter/2 - Length
The perimeter is the total distance around - width + width+ length + length.
you need length and width length multiply width = area length + length + width + width = perimeter
perimeter (P)=2(length+base) find length, area = length * base = (p/2-base)*base
10cm is a length. You can only find perimeter (length all the way round) if there is a shape!