Divide the length of the object on the drawing by its actual size to find the scale:
[tex]\frac{2\text{ inches}}{18\text{ feet}}[/tex]Since each feet has 12 inches:
[tex]\frac{2\text{ inches}}{18\text{ feet}}=\frac{2\text{ inches}}{18\cdot12\text{ inches}}=\frac{2}{216}=\frac{1}{108}[/tex]Therefore, the scale used in the drawing is 1:108 (one inch in the paper equals 108 inches in real life).
