Answer:
A. 6.0
Step-by-step explanation:
We have been given that the the inside diameter of the part on the paper is 1.50 inches.
We have been given that scale is 4:1 for actual size to drawing side.
[tex]\text{Scale}=\frac{\text{Actual size}}{\text{Map size}}=\frac{4}{1}[/tex]
Upon substituting 1.50 in our given proportion, we will get:
[tex]\frac{\text{Actual size}}{1.50\text{ inches}}=\frac{4}{1}[/tex]
[tex]\frac{\text{Actual size}}{1.50\text{inches}}\times 1.50\text{ inches}=\frac{4}{1}\times 1.50\text{ inches}[/tex]
[tex]\text{Actual size}=4\times 1.50\text{ inches}[/tex]
[tex]\text{Actual size}=6.0\text{ inches}[/tex]
Therefore, the actual size is 6.0 inches and option A is the correct choice.
