Question

 intr-un vas cubic cu muchia 12 cm se afla apa . apa se varsa intr-un vas paralelipipedic avand l=6 cm L=18 cm si h=20 cm . pana la ceinaltime se ridica apa?

Answer 1

Vcubului=l³
V=12³=1728cm³= 1,728 dm³
1dm³=1l

Vcubului=1,728dm³=1,728l

Vparalelipipedului=L*l*h
V=6*18*20=2160cm³
2160cm³=2,160dm³

Vparalelipipedului=2,160dm³= 2,160l

2,160-1,728=0,432dm³

V=0,432
V=L*l*h
6cm=0,6dm
18cm=1,8dm

0,6*1,8*h=0,432
1,08*h=0,432
h=0,4dm =4cm

Answer 2

Vcub=l^3=12^3=1728 cm^3=1,728dm^3=1,728l

Vparalelipiped=L*l*h=6*18*20=2160cm^3=2,160dm^3=2,160l

2,160-1,728=0,432l=0,432 dm^3

6cm=0,6dm

18cm=1,8dm

0,6*1,8h=0,432

1,08h=0,432

h=0,432/1,08

h=0,4dm

h=4cm