Question

A house blueprint has a scale of 1.5 in. : 4.5 ft. The length and

width of each room in the actual house are 45 ft and 60 ft,
respectively. What is the perimeter of the blueprint?
1. 300 in
2. 24,300 in
3. 210 in
4. 70 in

Answer 1

The scale of the blueprint is 1.5 inches : 4.5 feet, which means that every 1.5 inches on the blueprint represents 4.5 feet in the actual house. To find the length and width of the room on the blueprint, we need to convert the actual dimensions from feet to inches using the scale. The length of the room on the blueprint is (45 ft / 4.5 ft) * 1.5 in = 15 in. The width of the room on the blueprint is (60 ft / 4.5 ft) * 1.5 in = 20 in. The perimeter of the room on the blueprint is 2 * (15 in + 20 in) = 70 in.