Tolong dibantu ya.. Kalo bisa pakai cara!! Hehehehhe

7. V = 1/3 x La x t
400 = 1/3 x 100 x t
400 x 3 = 100 x t
1200 = 100 x t
t = 12 cm
EF = √144 + 25 = √169 = 13 cm = C

8. Tinggi segitiga = √144 + 25 = √169 = 13 cm
Lp = 10 x 10 + 4 x (13 x 5) = 100 + 260 = 360 = A

9. V = 1/3 x 15 x 1/2 x 6 x 8 = 5 x 24 = 120 = D

Jadikn terbaik ya, thanks