if you have the perimeter measurements of an area how would you calculate the diagonal length of the area?

Question

I am trying to figure the diagonals used for concrete form setting

the outside area is 38ft.by 32 ft 6 in.

Answer 1

if the corners are 90 degrees then the square of the diagonal is equal to the sum of the squares on the other 2 sides eg

a rectangle measures 4M x 5M

4x4 = 16, 5x5 = 25

so the sum of the squares is 16 +25 = 41

the square root of 41 is 6.4

so in this example the diagonal measures 6.4M

Answer 2

Well, is the area in a rectangular shape or not?

If not, you can draw the shape and perhaps extend it to a rectangular shape.

With a rectangular shape, I hope you know the Pythagoras' formula?

The added square amount of the existing two lines is the square of the diagonal line.

a^2 + b^2 = c^2

So getting the root of the added squares leads to the length of your diagonal. All OK?

Answer 3

surveyor is right, the diagonal is 50.00 ft for the rectangle you described.

However, you did say your dimensions are for the "outside" of the area. Do you actually want the diagonal to fit the inside of the wooden frame? If so, then you need to give the INSIDE dimensions (length and width) of the frame.

Answer 4

i don't really understand what is the connection of having the perimeter with the area if you just want to know the exact measurement of the diagonal just be ready with your measuring tape and take the measurement directly
you don't need an elaborate math to do the correct meaurement

Answer 5

Your diagonal should be 50.0025 feet or 600.03 inches.
Square both sides and add them together; then take the square root of that.