Find the area of rectangles quiz. The formula for finding the area of a rectangle is the length times the width. The same formula applies for finding the surface area of squares. This skill can be applied for finding the area of rectangular and square surfaces like football fields and may other sports stadia. Finding the area of rectangles is simple and there are many exercises in the quiz which will help in passing the notion across. There are also printable tests on the worksheets section. Download and get more offline practice. This is a geometry exercise for students in 4th, 5th, 6th, and 7th grade.