Problema Solution
A photograph, is 20 cm by 25 cm, is placed in a frame 3 cm wide.
a) what is the area of the photograph?
b) what is the area of the framed photograph?
c) what is the area of the frame only?
Answer provided by our tutors
a) what is the area of the photograph?
A1 = 20*25
A1 = 500 cm^2
The area of the photograph is 500 cm^2.
b) what is the area of the framed photograph?
A2 = (20 + 2*3)*(25 + 2*3)
A2 = 806 cm^2
The area of the framed photograph is 806 cm^2.
c) what is the area of the frame only?
A3 = A2 - A1
A3 = 806 - 500
A3 = 306 cm^2
The area of the frame only is 306 cm^2.