Answer:
Rectangle A is not a scale drawing.
Rectangle B is a scale drawing.
Explanation:
A scale drawing involves ratios.
Rectangle A:
10cm is double the original 5cm giving us a 1 : 2 ratio.
However, 25cm is not double the original 20cm. This means that this rectangle is not to scale of the given rectangle.
Rectangle B:
10cm is double the original 5cm giving us a 1 : 2 ratio once again.
This time however, 40cm is double the original 20cm. This means that this rectangle is a scale drawing of the given rectangle.
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