Answer:
1 cm^2 = 100 mm^2
9 cm^2 = 900 mm^2
5.2 cm^2 = 520 mm^2
1 dm^2 = 100 cm^2
17 dm^2 = 1700 cm^2
4.3 dm^2 = 430 cm^2
1 m^2 = 10000 cm^2
7 m^2 = 70000 cm^2
2.5 m^2 = 25000 cm^2
1 km^2 = 1000000 m^2
50 km^2 = 50000000 m^2
8.5 km^2 = 8500000 m^2
Explanation:
1 cm = 10 mm
1
= 10×10
= 100
9
= 9×100
= 900

5.2
= 5.20×100
= 520

1 dm = 10 cm
1
= 10×10
= 100

17
= 17× 100
= 1700

4.3
= 4.3 × 100
= 430

1 m = 100 cm
1
= 100×100
= 10000

7
= 7×10000
= 70000

2.5
= 2.5×10000
= 25000

1 km = 1000 m
1
= 1000×1000
= 1000000

50
= 50×1000000
= 50000000

8.5
= 8.5×1000000
= 8500000
