The area of a rectangle is given as:
[tex]A=l\times w[/tex]
The area of the frame is given as the area of the rectangle with dimension ( 10 by 8) minus the area of the rectangle with dimension ( 8 by 4)
Therefore
[tex]\begin{gathered} A_1=10\times8=80 \\ A_2=8\times4=32 \\ A_T=80-32=48 \end{gathered}[/tex]
Hence, the area of the frame is 48
Option C is correct
