Question

a photograph side 35cm by 22cm mounted on to a frame of external dimensions 45cm by 30cm find the area of the border surrounding the photograph

Answer 1

Area of frama=l*b=30*45=1350cm^2
Area of photo=l*b=35*22=770cm^2
so,border area=area of frame-area of photo=1350-770=580cm^2