Final answer:
The nominal size of 3/4 x 9 1/4 lumber is approximately 3/4 inch thick and 9 1/4 inches wide.
Step-by-step explanation:
The nominal size of 3/4 x 9 1/4 lumber refers to the dimensions before the wood is planed or finished.
In this case, 3/4 x 9 1/4 lumber means that the lumber is approximately 3/4 inch thick and 9 1/4 inches wide.
However, it's important to note that the actual dimensions may vary slightly due to the planing or finishing process.