Final answer:
By calculating the internal dimensions and volume of the crate and knowing that each one-inch cubical block has a volume of 1 cubic inch, it is determined that 48 one-inch cubical blocks can fit inside the crate.
Step-by-step explanation:
The question asks how many one-inch cubical blocks can fit inside a crate that is 10 inches long, 8 inches wide, and 3 inches high, given that the walls are one inch thick. To solve this, we first need to determine the internal dimensions of the crate by subtracting the thickness of the walls (1 inch) from each of the crate's external dimensions.
This gives us an internal length of 10 - 2 = 8 inches, an internal width of 8 - 2 = 6 inches, and an internal height of 3 - 2 = 1 inch. Next, we calculate the internal volume using the formula for volume, which is length × width × height.
The internal volume is thus 8 in. × 6 in. × 1 in. = 48 cubic inches. Since we know the volume of each one-inch cubical block is 1 cubic inch, we can determine that exactly 48 one-inch cubical blocks can fit inside the crate.