Question

On an architect's drawing of the floor plan for a house, 1 inch represents 3 feet if a room is represented on the floor plan by a rectangle that has sides of length 3.5 inches and 5 inches, what is the actual floor area of the room in square feet?

Answer 1

3.5×3=10.5 ft
5×3=15
15×10.5=157.5 square feet