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

A-9.

Consider the rectangle below.

 Generic rectangle top edge left$5$ top edge right blank left edge top blank interior top left$40$ interior top right blank left edge bottom$6$ interior bottom left$30$ interior bottom right blank bottom edge left blank bottom edge right$7$
1. Find the perimeter of the large outer rectangle shown above.

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

Generic rectangle

top edge left$5$

top edge right $\color{blue}7$

left edge top$\color{blue}{8}$

interior top left$40$

interior top right blank

right edge top$\color{blue}8$

 left edge bottom

$6$

interior bottom left$30$

interior bottom right blank

right edge bottom$\color{blue} 6$

bottom edge left blank

bottom edge right$7$

$52$ units

1. 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.

• $168$ square units