or a
(3)
[22]
Question 3: The fence around the garden
Mandla would like to erect a fence on all four sides of his new garden with an area of 225m²
The fencing will cost him R35 per metre. In order to use the least fencing, he wants the
perimeter of the garden to be a minimum. The fence will be supported by wooden fence poles,
approximately 1,5m apart. A gate 1,5m long, made of the same fence, can be placed between
any two poles. Each wooden fence pole will cost R9.50
3.1 For minimum perimeter, what shape should the garden be?
(2)
3.2 Calculate the length of each side of the garden.
(2)
3.3 How many metres of fencing will he need?
(2)
3.4 How many fence poles will he need?
3.5 How much will the fencing and the fence poles, excluding the gate,
cost him?
[1
(3
(3
TOTAL =
