Question 405459
a picture frame is 26 cm. by 18 cm. It is pasted on a colored cardboard so that there is 4 cm. margin around. Find the area of the colored cardboard that can be seen.

area of picture frame = 26*18= 468 cm^2

length including margin =26+8= 34
width including margin 18+8= 26
..
Total area = 884 cm^2

Area visible = 884-468=416 cm^2