The area of the picture frame will be given by:
Area=(area of picture and frame)-(area of pictures)
area of picture and frame is given by:
A1=Length*width
A1=10*12=120cm^2
area of the picture will be:
A2=8*6=48 cm^2
thus the area of the frame will be:
A=A1-A2
A=120-48
A=72cm^2