Question

what is the area of the shaded region?
11 ft
4 ft
4 ft
11 ft

Explanation:

Step1: Calculate area of large square

Area formula: $A = s^2$, where $s=11$ ft.
$\text{Area}_{\text{large}} = 11^2 = 121$ $\text{ft}^2$

Step2: Calculate area of small square

Area formula: $A = s^2$, where $s=4$ ft.
$\text{Area}_{\text{small}} = 4^2 = 16$ $\text{ft}^2$

Step3: Subtract areas to find shaded region

Shaded area = Large square area - Small square area.
$\text{Area}_{\text{shaded}} = 121 - 16 = 105$ $\text{ft}^2$

Answer:

105 square feet