A 4:1 scale drawing of a bearing is shown on an A-size print. Using a ruler, you measure the inside diameter of the part on the paper and you get 1.50 inches. What is the actual part size in inches? A. 6.0 B. 1.5 C.4.0 D 375

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.