A. Find the dimensions of the original painting.
Since the scale is 1 in : 40 cm
2 in ( 40 cm / 1 in) = 80 cm
1.5 in ( 40 cm / 1 in) = 60 cm
80 cm by 60 cm
B. Find the area of the original painting.
A = 80 cm x 60 cm = 4800 sq cm
C. Since 1 inch is 2.54 cm, find the dimensions of the original painting in inches.
80 cm ( 1 in / 2.54 cm) = 31.5 in
60 cm ( 1 in / 2.54 cm) = 23.6 in
D, Find the area of the original painting in square inches.
A = 31.5 in x 23.6 in = 743.4 sq in