8 cups = 64cm
From the catalog, we know that a stack of 2 cups is 16 cm tall, and a stack of 4 cups is 20 cm tall.
To find the height of a stack of 8 cups, we can use proportionality.
Let x be the height, in cm, of a stack of 8 cups. Then, we can set up the following proportion:
2 cups / 16 cm = 8 cups / x cm
Cross-multiplying, we get:
2 cups * x cm = 16 cm * 8 cups
Simplifying, we get:
2x = 128
x = 64 cm
Therefore, the height of a stack of 8 cups is 64 cm.