According to the given data we have the following:
poster length=1.5 meters long
height=0.8 meters wide
Therefore, to calculate the the area of the poster in square centimeters we would have to calculate the following formula:
Area=base*height
Area=1.5 meters long*0.8 meters wide
Area=1.2 meters
To transform it into square centimeters we would make the following calculation:
1 meter=100 square centimeters
So, area in square centimeters=1.2 meters*100 square centimeters
area in square centimeters=120 cm
The area of the poster in square centimeters would be 120 cm