3.) Cindy made several patterns out of toothpicks. Look at the patterns and consider their
outside perimeters: (Remember the perimeter is the distance around the outside of a figure. Toothpicks inside the shape do not count in the perimeter.)

a. How many toothpicks make up the perimeter of Shape 12?
b. How many toothpicks make up the perimeter of shape 18?
c. How many toothpicks make t up the perimeter of shape 30?