Question

a rectangular region is removed from another rectangular region to create the shaded region shown below. find the area of the shaded region.
7 cm
9 cm
10 cm
18 cm
cm²

Explanation:

Step1: Calculate area of large rectangle

$\text{Area}_{\text{large}} = 18 \times 10 = 180 \ \text{cm}^2$

Step2: Calculate area of small rectangle

$\text{Area}_{\text{small}} = 9 \times 7 = 63 \ \text{cm}^2$

Step3: Subtract small from large area

$\text{Area}_{\text{shaded}} = 180 - 63$

Answer:

$117$ $\text{cm}^2$