CPM Homework Help : INT2 Problem 1-66

Determine the total area of each rectangle below. Remember that 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.

generic rectangle left edge top is blank

interior top left $40$

interior top right $100$

left edge bottom $+10$

interior bottom left is blank

interior bottom right is blank

bottom edge left $8$

bottom edge right is blank

Hint 1(a):

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

$40\div8=5$
$100\div5=20$

Hint 2(a):

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

Add them together for the total area of the rectangle.
$40+100+80+200$

Answer (a):

$420$

generic rectangle interior top left is blank
interior top right $24$
interior bottom left $12$
interior bottom right is blank
bottom edge left $4$
bottom edge right $+12$
Hint (b):
Use the same strategy for part (b).