To find the area of a rectangle (in this case, a workbook), you can use the formula:
\[ \text{Area} = \text{width} \times \text{height} \]
Given that the workbook is 8 inches wide and 10 inches tall, you can calculate the area as follows:
\[ \text{Area} = 8 , \text{inches} \times 10 , \text{inches} = 80 , \text{square inches} \]
So, the area of the workbook is 80 square inches.