Final answer:
The nominal size of 3/4 x 3 1/2 lumber is 3/8 inch. The distance of 16.0 in. is equal to 40.64 cm.
Step-by-step explanation:
The nominal size of 3/4 x 3 1/2 lumber is the size that is used to describe the wood before it is planed and cut to its actual dimensions. In this case, the nominal size can be determined by multiplying the fractions together. So, 3/4 x 3 1/2 = 3/8. Therefore, the nominal size of the lumber is 3/8 inch.
To convert the distance of 16.0 in. to centimeters, we can use the conversion factor of 2.54 cm = 1 in. By multiplying 16.0 in. by 2.54 cm/in., we get the distance in centimeters: 16.0 in. x 2.54 cm/in. = 40.64 cm.