The document provides information about calculating perimeter and circumference. It defines perimeter as the distance around the edge of a shape and provides the formula for calculating the perimeter of rectangles as P = 2L + 2W. It includes examples of calculating perimeter for rectangles and finding the amount of fencing or edging material needed. It also defines circumference as the distance around a circle and provides the formula for calculating circumference as C = πd, where d is the diameter.