Răspuns :
volumul=400 dm^{3}
lungime=10 dm
latime=5 dm
volumul=lungime×latime×adancime
400dm^{3}=10 dm× 5dm×adancime
400 dm^{3}=50 dm×adancime
adancime=400dm^{3} ÷50 dm
adancime=8 dm
lungime=10 dm
latime=5 dm
volumul=lungime×latime×adancime
400dm^{3}=10 dm× 5dm×adancime
400 dm^{3}=50 dm×adancime
adancime=400dm^{3} ÷50 dm
adancime=8 dm