How do you do this problem ?

Here's how you do it......The length is 4 meters. There are two = lengths in any rectangle, therefore you will use 8 meters for both lengths That leaves 20 meters - 8 meters = 12 meters left for the widths. there are two equal widths in any rectangle so each width is 6 meters. the width of the garden is 6 meters. Sometimes you can figure something out without using an equation.