Salutare!
Cuboidul regulat este paralelipipedul dreptunghic.
Incepem cu formulele.
[tex]At=Al+2*Ab\\V=L*l*h[/tex]
In care
At = Aria totala;
Al = Aria laterala;
Ab = Aria bazei.
L, l, h - Lungime, latime, inaltime.
Aria laterala = Perimetrul bazei * inaltimea.
[tex]Al = Pb*h\\Al= 2(L+l)*h\\Al=2(6+5)*8\\Al=2*11*8\\Al=22*8=176cm^{2} \\\\Ab=L*l=6*5=30cm^{2} \\\\At=176+2*30=176+60=236cm^2\\\\V=6*5*8=30*8=240cm^{3}[/tex]
