Wayne's class is building a wagon to be used as a float for the upcoming Pioneers Day Parade. The outsides of the four wagon wheels are going to be covered in brown felt so they can draw pictures on them. Rubber stripping will go around the wheel to help give it a smoother ride during the parade.
If each wheel has about 94.2 inches of rubber around it, the diameter of each wheel is
inches.
Given this diameter, they need
square inches of felt to cover each wheel.
If they can buy a rectangular piece of felt that has a width equal to the diameter of the wheel, the rectangular piece of felt would need to have a length of at least
inches in order for each of the four wheel covers to be a solid piece. Though to account for any cutting errors, it should probably be a little longer.
The diameter of each wheel is 30 inches (since the circumference is 94.2 inches, so diameter = circumference/π ≈ 94.2/π ≈ 30).
For each wheel, they would need π*radius^2 square inches of felt to cover it. Since radius = diameter/2 = 30/2 = 15, they would need π*15^2 ≈ 706.86 square inches of felt for each wheel.
To cover all four wheels as a solid piece, they would need a rectangular piece of felt with a width of 30 inches and a length of at least 4*30 = 120 inches. To account for cutting errors, it would probably be best to have a little extra length.