She used 1 board on each side. The longer sides were 7.5 feet long and the shorter sides were 6.5 feet long, so:
The area of the rectangle is given by:
[tex]\begin{gathered} A=w\cdot h \\ where \\ w=7.5ft \\ l=6.5ft \\ A=(7.5)(6.5) \\ A=48.75ft^2 \end{gathered}[/tex]
