Respuesta :
Answer:
[tex]\huge\boxed{\sf Area \ of \ border = 104\ in.\²}[/tex]
Step-by-step explanation:
Area of larger rectangle:
= Length * Width
= 18 * 12
= 216 in.²
Area of smaller triangle:
Length = 12 - 2 - 2 = 8 in.
Width = 18 - 2 - 2 = 14 in.
= Length * Width
= 8 * 14
= 112 in.²
Area of shaded region:
= 216 - 112
= 104 in.²
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!