10.8.2 Self-Check on Scale Diagrams
Exercise 4: Size of a Garden
This diagram below represents a scale diagram of a garden (it is not to scale, though!) showing the position of a small fenced area at one end of the garden.
The scale used is 1:200.
a) State what a scale of 1:200 means.
b) Using the dimensions on the diagram calculate the width and full length of the garden in meters.
c) Calculate the length of the garden to be enclosed by the fence in meters.
a) 1 cm on the diagram represents 200 cm on the ground.
Since 1 m = 100 cm,
So the width of the garden is 20 m.
So the full length of the garden is 40 m.
Thus the fenced length of the garden is 10 m.