Răspunsuri

2014-02-27T09:26:40+02:00
L=0,4 m=4 dm
Va=20 l=20 dm^{3}
ha=?
Va=l x l x ha
20 dm^{3}=4dm x 4dm x ha
20dm x dm x dm=4dm x hdm  x ha
5dm=1 x 4 x ha
ha=5dm/4=>ha=1,25dm
1 5 1