A square painting measures 2 meters on each side. What is the area of the painting in square centimeters?
200 *200 = 40,000 cm^2
or alternately
4 meters^2 * 100 cm/meter * 100 cm/meter = 4 * 10,000 cm^2 = 40,000 cm^2
or alternately
4 meters^2 * 100 cm/meter * 100 cm/meter = 4 * 10,000 cm^2 = 40,000 cm^2