Directions: Type the correct answer in each box. Use numerals instead of words.Use 3.14 for .
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 BLANK inches.
Given this diameter, they need BLANK 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 BLANK 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.
+50 Well, there are 94.2 inches of rubber around the wheel, which means that the circumference is 94.2. Circumference is pi (3.14) times the diameter, so we get 94.2=3.14•(diameter). If we divide both sides by 3.14, we get the diameter to be 30, and the radius to be 15. The area of a circle is 3.14 times the radius squared, so that gives us 3.14•225, which is 706.5 square inches. Lastly, if you want to cut the circles out of a rectangle, you need to take the diameter of one circle as the height and the diameter of four circles as the width. So, the rectangle needs to be at least 30 inches tall and at least 120 inches wide. "It should probably be a little longer" doesn't add any exact measurements, but it probably means to add a few inches of felt around each of the circles.
