Mia will use one of these boards for the length of the shelter. She knows she wants

the length of the shelter to measure 3.25 feet. She will use a different board for the
width of the shelter. The width of the shelter will be shorter than the length.
a. Which board will Mia use for the length of the shelter, given that 1 foot = 12
inches?

To determine which board Mia will use for the length of the shelter, we need to compare the lengths of the boards provided.

First, let's convert 3.25 feet to inches using the conversion factor given:
3.25 feet * 12 inches/foot = 39 inches

Now let's compare the lengths of the boards:
- Board A: 36 inches
- Board B: 48 inches
- Board C: 42 inches

Since the length of the shelter is 39 inches, Mia will use Board A, as it is the closest in length to the desired measurement.

What is the width of the shelter, measured in feet?

The width of the shelter, measured in feet, is not given in the question. Therefore, we cannot determine the exact width of the shelter.