To find the scale factor of the drawing in its simplest form, we can start with the scale given:
1 inch = 1 foot.
To express this scale as a ratio, we need to convert the units so they are the same. We know that 1 foot is equal to 12 inches. Therefore, we can rewrite the scale as follows:
1 inch = 12 inches.
Now, we can express the scale factor as a ratio:
1 inch (drawing) : 12 inches (actual size).
This simplifies to:
1 : 12.
Thus, the scale factor of the drawing is 1:12.