3 George has a rectangular deck that is 9 feet wide and 6 feet long. He builds a
new deck that is double the length and width of the old deck. What is the area
of the new deck?
Show your work.

square feet

Applying the area of a rectangle, it is found that the area of the new rectangular deck is of 216 square feet.

The area of a rectangle of width w and length l is given by the multiplication of these two measures, that is:

In this problem, the dimensions are:

Then:

The area of the new rectangular deck is of 216 square feet.

To learn more about a rectangle's area, you can take a look at link

Step-by-step explanation:

-Given that the dimensions of the new deck are double the dimensions of the old deck:

#The area of the new deck can now be calculated as:

Hence, the area of the new deck is