A rectangular sandbox is surrounded on all sides by a strip

Last updated: 7/17/2022

A rectangular sandbox is surrounded on all sides by a strip of grass that is 5 feet wide on all sides. The length of the sandbox is 4 feet more than the width, and the total area for the sandbox and the grass is 189 square feet. Find the dimensions of the sandbox. The length of the sandbox is feet and the width is feet.