1, 3 divided by 200 parts of 1 equals 600 cm, 2 divided by 200 parts of 1 equals 400 cm, and 600 times 400 equals 240,000 square cm.

2. solution: let the actual length of the height be x cm. Solution: Let the actual length of the bottom be x cm.

1:200=3:x 1:200=2:x

x=600 x=400

600 times 400 = 240,000 square centimeters.