The find out Perimeter:

Perimeter of the rectangle is where l is the length and w is the width.

       (Substitute l = 8 and w = 3)

          (Add: )

ft            (Multiply: )

The find out Area: Area of the rectangle is where l is the length and w is the width.

         (Substitute l = 8 and w = 3)

     (Product of two same signs is positive)

ft            (Multiply: )

The perimeter (P) = 22 ft and area (A) = 24 ft.