Answer:
121.4 inches
Explanation:
If we want to use 1 board to make all four sides of the box, the minimum length of the board needs to be the sum of the length of the four sides.
So, as the box is rectangular, two sides have a length of 24.3 inches and two sides have a length of 36.4 inches.
If we sum them all, we have:
24.3 + 24.3 + 36.4 + 36.4 = 121.4 inches
So the board needs to have a minimum length of 121.4 inches