Question

Zamien na
a)centymetry kwadratowe : 600 mm 2*,2dm 2,4 m 2,1m2,12cm2
b)metry kwadratowe:50dm2,2a , 4 ha , 30000cm2
c)hektary :7 km , 800 a , 50000m2,2km2 4 ha

*jednostki kwadratowe

DAJE NAJ

Answer 1

a)centymetry kwadratowe :

600 mm 2* = (600 : 100)cm^2 = 6cm^2

2dm 2 = (2 * 100)cm^2 = 200cm^2

4 m 2 = (4 *10000)cm^2 = 40 000cm^2

1m2 = 1m * 1m = 100cm * 100cm = 10 000cm^2

12cm2 = 12cm^2

b)metry kwadratowe:

50dm2 = (50 : 100)m^2 = 0,5m^2

2a  = 2 * 100m^2 = 400m^2

4 ha = 4 * 100a = 400a = 400 * 100m^2 = 40 000m^2

30000cm2 = (30 000 : 10 0000)m^2 = 3m^2

c)hektary :

7 km2 = 7 * 100ha = 700ha

 800 a = (800 : 100)ha = 8ha

 50000m2 = (50 000 : 10 000)ha = 5ha

2km2 = 2 * 100ha = 200ha

4 ha = 4ha

Answer 2

a) 600mm^2=6cm^2

2dm^2=200cm^2

4m^2=40000cm^2

1m^2=10000cm^2

12cm^2=12cm^2

b) 50dm^2=0,5m^2

2a=200m^2

4ha=40000m^2

30000cm^2=3m^2

c)7km^2=700ha

800a=8ha

50000m^2=5ha

4ha=4ha