A plan of rectangular foundation is drawn on a 1 / 2000 scale drawing. How many square meters is the actual floor area of this foundation? Please write a formula
If the length of rectangular foundation is a (CM) and the width is B (CM) on the plan, the actual length is 2000a (CM), the width is 2000b (CM), and the actual floor area is 2000a * 2000b = 4000000ab square centimeter = 400m2
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