The document provides 3 examples of perimeter calculations: 1) Finding the perimeter of a triangle with sides of 5, 9, and 11 cm, which equals 25 cm. 2) Calculating the perimeter of a rectangle and two similar squares shown in a diagram, which equals 34 cm. 3) Determining the cost of barbed wire to fence a 120m x 120m square garden, which is RM5280 using 480m of fencing at RM11 per meter.