If a set of blueprints has a scale of 1/8" = 1', a wall that is actually 17' long will be __________ long on the blueprint.

Question

Quizplus · Accepted Answer

First, we need to find the scale factor, which is the ratio of the blueprint measurement to the actual measurement.
1/8" = 1'
1" = 8'
So the scale factor is 1/8 (blueprint measurement) divided by 8 (actual measurement) = 1/64.
To find the length of the wall on the blueprint, we multiply the actual length by the scale factor:
17 x 1/64 = 17/64 = 0.265625 feet
To convert this to inches, we multiply by 12:
0.265625 x 12 = 3.1875 inches
So the wall on the blueprint is 3-3/16" long, which is closest to choice B, 2-1/8".

If a Set of Blueprints Has a Scale of 1/8