Problem 29 of 34geo-029
On a floor plan, 1 inch represents 6 feet. A rectangular room measures 3 inches by 4 inches on the plan. What is the perimeter of the actual room, in feet?
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Solution walkthrough1:17
- The scale turns plan inches into real feet: every inch on the plan is feet in the room.
- Scale each side: feet and feet.
- Perimeter is the distance around all four sides: feet.
- Traps: is the perimeter in plan inches. adds only two sides. is the area.