15. A scale model of a building is 5 inches wide by 7 inches long. If the scale is 1 in.:15 ft, how long is the building?
Try again.
To find the length of the building, we need to use the scale to convert the dimensions of the model into the actual dimensions of the building.
The scale is given as 1 in.:15 ft, which means that 1 inch on the model represents 15 feet in reality.
We know that the width of the model is 5 inches, so we can use the scale to find the actual width of the building:
5 inches on the model x 15 feet/inch = 75 feet
Similarly, the length of the model is 7 inches, so we can find the actual length of the building:
7 inches on the model x 15 feet/inch = 105 feet
Therefore, the building is 105 feet long.