Answered The length of a rectangle is 4cm longer than the width. The perimeter is 80 cm. Find the length and width.

Answer 1

Suppose that x is the length and y the width of the rectangle. Then we have 2x+2y=80 and x=y+4. Therefore, 2(y+4)+2y=80 or 4y+8=80 or 4y=72 or y=18 and x=22.

Answer 2

Here is a video of the solution. How to calculate Length and Width of Rectangle when you are given only the Perimeter and the relationship of the Length (L) to the Width (W).