To determine what length board Man should use for the length of the shelter, we need to convert 3.25 feet into inches since the options given are in inches.
1 foot is equal to 12 inches. Therefore, to convert 3.25 feet to inches:
\[ 3.25 , \text{ft} \times 12 , \text{in/ft} = 39 , \text{in} \]
Now, we know that the required length for the shelter is 39 inches.
Looking at the available options:
- a) 36 inch board
- b) 42 inch board
- c) 48 inch board
- d) 39 inch board
The appropriate choice is: d) 39 inch board, as it matches the required length exactly.
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