You cannot.
Given only the slopes, it is impossible to determine the distance between the parallel lines and so the lengths of the sides. Without that you cannot calculate the perimeter.
You cannot.
Height = (Perimeter/2) - Base
Perimeter = 2*(L + W).
If you are given the area you will have to think what do you times with the number you have to get it.
Multiply length by width
Length = (Perimeter - twice width) / 2
There is no reason for the perimeter of a triangle to have any relation to the perimeter of an unrelated rectangle!
the perimeter of a rectangle is calculated by : 2*(l+b)
The length of a rectangle is twice its width. If the perimeter of the rectangle is , find its area.
by appying 2l+2w
find the perimeter and area of a rectangle that is 15cm long and 5cm wide
the length of a rectangle is 5 more then the width. Find the perimeter and the area of the rectangle