Answer: There are 12 pieces of 6 foot square paper needed to wrap.
Explanation:
Since we have given that
Length of piece of wrapping paper = 6 square foot
Length of paper each present needs is given by

Number of presents he wants to wrap = 2
Total length of wrapping paper she needs is given by

We'll use the unitary method,





∴ there are 12 pieces of 6 foot square paper needed to wrap.