a. Since you're turning over the edge each side --> 2*5/8 = 10/8 in.
10/8 in. + 5 3/4 in. = ? in.
b. Based on the number you found in part a. --> ?^2 * 48 = # square in.
c. How many full squares can you make with ? in. dimensions given the restriction of 36 in. wide? That'll be the number of squares you can fit per row. Now, take that number of full squares and see how many rows you would need to have 48 squares.
d. How many squares are left over. Let s = # of squares left over. So, s(?^2) will be your answer.