The area of the store, will be given by:
[tex]\begin{gathered} A=w\cdot l \\ where\colon \\ w=100 \\ l=250 \\ so\colon \\ A=250\cdot100 \\ A=25000ft^2 \end{gathered}[/tex]The perimeter will be:
[tex]\begin{gathered} P=2l+2w \\ P=2(250)+2(100) \\ P=500+200 \\ P=700ft \end{gathered}[/tex]The shape of the floor of the store is a rectangle.