Tolonglah jawab 3 soal berikut menggunakan cara please!!!

18. 1 ha = 10.000 m²
2 are = 200 m²
500 m²
________________+
10.700 m²
=> B


19. 6,75 m³ = 6750 l
2080 dm³ = 2080 l
8.175 l
____________________+
17.005 l
=> C


20. 1 lusin = 38.000
1 gross = 12 lusin
maka 12 lusin x 38.000 = 456.000
=> B