Answer:
[tex]100-x^2[/tex]
Step-by-step explanation:
Length of the Blue Square = 10 inch
Length of the Red Square = x inch
Area of a Square =[tex]l^2[/tex]
The Area of the Blue Band = Area of the Blue Square - Area of the Red Square
[tex]=(10^2)-x^2\\=100-x^2[/tex]
The area of the blue band is [tex]100-x^2[/tex]
