10.8.3 Self-Check on Perimeters
Exercise 5: Fence Length
For the garden shown in the diagram in Exercise 4 calculate the length of fence needed to enclose the fenced area of the garden in meters.
Thus the length of the fence needed to enclose the end of the garden shown is 60 m.
Exercise 6: Fenced Pond
The gardener has now decided that they want to build a circular pond in the garden with a diameter of 2 m. As she has young children she also wants to erect a low fence around the perimeter of the pond. Calculate how much more fencing she will need to buy to enclose the pond quoting your answer to the 2 decimal places.
The perimeter of a circle is its circumference.
Hence she will need to buy 6.28 m to enclose the pond.