Question

A toy company is building dollhouse furniture. A rectangular door of a dollhouse has a height of 7 centimeters and a width of 3 centimeters. What is the perimeter of the door on a scale drawing that uses the scale 3:5?

33 cm
20 cm
14 cm
12 cm

Answer 1

The answer is 12 cm, because if you multiply 7 times 3:5

(that equals 4.2) and 3 times 3:5 ( that equals 1.8) then follow the rest of the instructions here (because I don't feel like explaining with words)

P = 2(length) + 2 (width)

P = 2 (4.2) + 2 (1.8)

P = 8.4 + 3.6

P = 12 cm

You're welcome!