Final answer:
The nominal size of 1 1/2 x 2 1/2 lumber is 1.5 x 2.5 inches. The distance of 16.0 inches is equal to 40.64 centimeters.
Step-by-step explanation:
The nominal size of 1 1/2 x 2 1/2 lumber is 1.5 x 2.5 inches. The first number refers to the thickness (or depth) of the lumber, which is 1.5 inches, and the second number refers to the width, which is 2.5 inches.
To convert the distance of 16.0 inches to centimeters, we can use the conversion factor: 1 inch = 2.54 centimeters. By multiplying 16.0 inches by 2.54, we find that the distance is 40.64 centimeters.