tolong di bantu besok di kumpul

3 km°2+10cm°2 =.... hm°2
300 hm°2 + 0,0003°2 = 300,0003 hm°2

3km²+10cm²=....hm²
=(3×100)+(10:100.000.000)
=300+0,00000001
=300,00000001

maaf klo salah