bantu aku kawan brainly....

31.)Volume Balok=35×30×20=21.000cm³
Volume Air pada balok=35×30×15=15.750cm³= 15,75 liter(C)

31.) Lp = La + 4segitiga
= (20 × 20) + (4 × 1/2 × 24 × 20)
= 400 + 960 = 1360cm2 (A)

32.) v = La × t
600 = (1/2 × 12 × 10) × t
600 = 60 × t
t = 600 / 60 = 10cm (C)

maaf kalo salah:D
kalo bener jadiin jawaban terbaik y:v