A) Zamień na centymetry kwadratowe : 240 mm2 , 12 dm2 , 21,15 dm2 , 12,5 dm2 B) zamień na metry kwadratowe : 18000 cm 2 , 7185 dm2 , 42,5 a , 0,2 ha , 1,05 ha , 0,07 km2 C)zamień na ary : 14 m2 , 12730 m2 , 0,4 ha , 1,35 ha 1,2 km2 D) zamień na hektary : 174500 m2 , 30a , 102000a , 1,6 km2
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a)240 mm2=2,4cm2
12dm2=1200cm2
21,15 dm2=2115cm2
12,5dm2=1250cm2
b)18000cm2=1,8m2
7185dm2=71,85m2
42,5a=4250m2
0,2ha=2000m2
1,05ha=10500m2
0,07km2=70000m2
c)14m2=0,14a
12730m2=127,3a
0,4ha=40a
1,35ha=135a
1,2km2=12000a
d)174500m2=17,45ha
30a=0,3ha
102000a=1020ha
1,6km1=160ha
A) na cm^2
240mm^2 = 2,4 cm^2 ( 1mm^2 = 0,01 cm^2)
12 dm^ = 1200 cm^2 ( 1dm^2 = 100 cm^2)
21,15 dm^2= 2115 cm^2
12,5 dm^2 = 1250 cm^2
B) Na metry kwadratowe
18000 cm^2 = 1,8 m^2 (1cm^2 = 0,0001 m^2)
7185 dm^2 = 71,85 m^2 (1 dm^2 = 0,01 m^2
42,5 a = 4250 m^2 ( 1a = 100 m^2)
0,2 ha = 2000 m^2 ( 1 ha = 10000m^2)
1,05 ha = 10500 m^2
0,07 km^2 = 70000 m^2 ( 1 km^2 = 1000000 m^2)
C) na ary
14 m^2 = 0,14 a ( 1m^2 = 0,01 a)
12730 m^2 = 127,3 a
0,4 ha = 40a (1 ha = 100 a)
1,35 ha = 135 a
1,2 km^2 = 12000 a ( 1km^2 = 10000 a)
D) na hektary
174500 m^2 = 17,45 ha ( 1 m^2 = 0,0001 ha)
30 a = 0,3 ha ( 1 a = 0,01 ha)
102000 a = 1020 ha
1,6 km^2 = 160 ha ( 1 km^2 = 100 ha)