2. Distance on the map: The actual distance is10km =10km =1000000cm.

=20: 1000000

= 2cm =1000000cm

= 1cm=500000cm

= 1:500000

The scale of this map is 1: 500000.

3.15 * 6000000 = 9000000 cm 9000000 cm = 900km A: The actual distance from Nanjing to Beijing is about 900 km.

4.18cm =180mm

Distance on the map: actual distance

180: 15

=180mm =15mm

= 1 2mm =1mm

= 12: 1

A: The scale on this map is 12: 1.

5、 13*200=2600cm

7*200= 1400cm

2600 cm = 26 m

1400cm= 14m

26* 14=364 cm2

A: The actual area of the basketball court is 364 square centimeters.