The perimeter P of a rectangle is given by the formula,
\
The area A of a rectangle is given by the formula,
\
Where L is the length and is W is the width of the rectangle. 
Perimeter of the rectangle :
\
(Substitution:
)
(Add:
)
(Multiply:
)
Area of the rectangle : \ \
\
(Substitution:
)
(Multiply:
)
Perimeter of the rectangle is 26 ft.
\Area of the rectangle is 40 ft2.