V air = 12 liter = 12 dm3 = 12.000 cm3
tinggi air = V air : luas alas
= 12.000
________
1200
= 10 cm
tinggi wadah = 3 x 10 cm = 30 cm
8. Diketahui :
r = 15 cm
V kubus = 15 x 15 x 15 = 3375 cm3
prisma :
a = 8, t = 5 t, t prisma = 15
V prisma = (1/2 x 8 x 5) x 15