### Home > CCAA8 > Chapter 3 Unit 4 > Lesson CCA: 3.2.3 > Problem3-59

3-59.

Find the total area of each rectangle below. Each number inside the rectangle represents the area of that smaller rectangle, while each number along the side represents the length of that portion of the side.

1.  Generic rectangleleft edge top interior top left $12$ interior top right $39$ left edge bottom$11$ interior bottom  left blank interior bottomright blank bottom edge left$4$ bottom edge right blank
 Generic rectangleleft edge top$3$ interior top left$12$ interior top right$39$ left edge bottom$11$ interior bottom  left blank interior bottomright blank bottom edge left$4$ bottom edge right $13$

Find the sides that you know from the products within the boxes.

$12\div4=3$

$39\div3=13$

Now find the areas of all of the boxes inside the rectangle.

Add them together for the total area of the rectangle.
$12+39+44+143$

$238$

1.  Generic rectangle interior top left blank interior top right$18$ interior bottom left$40$ interior bottom right blank bottom edge left$8$ bottom edge right$6$

Use the same strategy for part (b).