In a 1:500 scale plan, the perimeter of a rectangular classroom is 10cm, and the ratio of length to width is 3:2 2. Write the ratio of the area on the graph to the time area, and compare it with the scale. What do you find?

In a 1:500 scale plan, the perimeter of a rectangular classroom is 10cm, and the ratio of length to width is 3:2 2. Write the ratio of the area on the graph to the time area, and compare it with the scale. What do you find?

1. The results show that the length of the graph is 10 / 2 × 3 / 5 = 3cm, the width is 10 / 2 × 2 / 5 = 2cm, the area is 2 × 3 = 6cm & # 178; the actual length is 3 / 1 / 500 = 1500cm = 15m, the actual width is 2 / 1 / 500 = 1000cm = 10m, the actual area is 1500 × 1000 = 1500000cm & # 178; = 150m & # 178; 2