Final answer:
The length of the rectangle is 6 inches.
Step-by-step explanation:
The width of the rectangle is 3 inches shorter than the length. Let's assume the length of the rectangle is x inches. Therefore, the width would be x - 3 inches. The perimeter of a rectangle is calculated by adding all four sides together. In this case, the perimeter is given as 18 inches. So, we can set up the equation:
2(x + (x - 3)) = 18
Simplifying the equation, we get:
2(2x - 3) = 18
Solving the equation, we find that x = 6 inches. Therefore, the length of the rectangle is 6 inches.
Learn more about Rectangle Perimeter