### Home > CCA > Chapter A > Lesson A.1.1 > Problem A-9

A-9.

Consider the rectangle at right.

Find the perimeter of the large outer rectangle shown at right.

You can find the missing side length using the area and side length given for the upper left inner rectangle.

units

Notice that the areas of two of the parts have been labeled inside the rectangle. Find the total area. Remember to show all work leading to your solution.

square units