you need length and width length multiply width = area length + length + width + width = perimeter
width = (perimeter-2*length)/2
Length + length + width + width = perimeter. Length + width x 2 = perimeter
You divide the perimeter by the width and you get the lenght
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
Perimeter = 2 * width + 2 * length, so rearranging --> width = (Perimeter / 2) - length
If it's a rectangle, just minus the length from the perimeter twice and than divide what you have by 2. Width = (Perimeter - (length*2))/2
The perimeter is the total distance around - width + width+ length + length.
Perimeter = Width x 2 + length x 2. To find width, you minus the length from perimeter because opposite of ADD is SUBTRACT.
It isn't clear how you would define the "perimeter" for a 3D figure. The base is the product of length x width.
It is impossible to find the perimeter without the width of the rectangle but if you want a formula it would be (43*2) + 2x. x representing the width
you multiply 2 times the width and 2 times the length ad then add them together. the equation would be 2l+2w=perimeter