First, you should know that perimeter is equal to the sum of all the sides. If the flower garden is a rectangle, the width on the other side is also 3. 3+3 equals 6. Next, subtract 6 from 30 to get 24. Now, divide 24 by 2 to get the length of 1 side. 24/2 equals 12. So the length is 12 feet
