CPM Homework Help : CCG Problem 1-66

Bertie placed a transparent grid made up of unit squares over each of the shapes she was measuring below. Using her grid, approximate the area of each region.

Hint:

Approximate the area by counting the squares. Count squares completely filled as one unit squared, and those only partially filled as one-half a unit squared.

Count filled squares (a):

There are 10 completely filled squares inside the figure.

$10$

Count partially filled squares (a):

There are 10 partially filled squares inside the figure.

$10$

Answer (a):

$10(1\text{ unit})+10\left ( \frac{1}{2} \text{ units}\right)=15\text{ units}^2$