Question

A blueprint for a building includes a rectangular room that measures 3 inches long and 7.5 inches wide The scale for the blueprint says that 1 inch on the blueprint is equivalent to 10 feet in the actual building. What are the dimensions of this rectangular room in the actual building?​

Answer 1

3 · 7.5 = 22.5:  22.5 is the area of the building on the blueprint in inches

22.5 · 10 = 225 feet squared is the area of the building in real life.

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