Question

what is the area of the shaded region?
17 in
12 in
18 in
9 in
square inches

Explanation:

Step1: Calculate area of outer rectangle

$\text{Area}_{\text{outer}} = 17 \times 18 = 306$ square inches

Step2: Calculate area of inner rectangle

$\text{Area}_{\text{inner}} = 9 \times 12 = 108$ square inches

Step3: Subtract inner from outer area

$\text{Area}_{\text{shaded}} = 306 - 108 = 198$ square inches

Answer:

198 square inches