zamień na m2
65cm2; 9cm2;0,08km2;1.7a
na km2
32m2; 994ha;39a;2ha
na ary
367m2;24km2;0.5km2;3.4ha;
na hektary
900m2;5km2;375a;0.9a
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65 cm2 = 65 x cm x cm = 65 x 0,01m x 0,01m = 65 x 0,0001m2 = 0,0065m2
9cm2 = ....... = 0,0009m2 itd
32m2 = 32 x 0,001 km x 0,001km = 32 x 0,000001km2 = 0,000032 itd
a a ary i hektary nie pamiętam :)