E1.3 Use scale drawings to calculate actual lengths and areas, and reproduce scale drawings at different ratios.
Activity: Use and Reproduce a Scale Drawing
Example 1
Here is a scale drawing of a pool.
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Source: translated from En avant, les maths!, 8e année, ML, Sens de l’espace, p. 13.
- Using the 1:100 scale, determine the area occupied by the pool in meters.
- Make a scale drawing of the pool, using a scale of 1:50.
Example 2
Here is a drawing that represents identical windows in a scale of 1:20.
Determine the actual area of the two windows.

Source: translated from En avant, les maths!, 8e année, ML, Sens de l’espace, p. 15.