isi cara 6 sampai 9 yah isi caranya

6.) 6.912 x 2 = 13.824³ = 24
7.) D = V/W = 6.000liter / 30 menit = 6m³/0.5 jam = 12 m³/jam
9.) I = L = π x r²
= 22/7 x 7 x 7
= 154 cm²
II = L = p x l
= 22 x 6
= 132 cm²

I+ II = 154+132 = 286


(Maaf kalo salah,semoga bermanfaat)