The width of a rectangle is 1/3 its length, l Which expression represents the perimeter of the rectangle?
Let the length of the rectangle be
Then we can say that the width is
Now we need to form an expression (equation) for the perimeter.For that, we use the formula
#color(blue)("Perimeter of a rectangle"=2(l+w)# #color(blue)("units"#
We know that the length is
Use the distributive formula
So, we can say that, the perimeter of the rectangle is