Răspuns :
Ac=6a^2, unde Ac - aria totala a cubului si a- latura
150dm=6 * a^2
a^2=150/6
a^2=25 =>
a=5 (dm)=0.5m
150dm=6 * a^2
a^2=150/6
a^2=25 =>
a=5 (dm)=0.5m
150 dm patrati=0,150 de m patrati
0,150/12 muchii=0,0125 m are o muchie a cubului