**** diagonala = √(L²+l²+i²) = √ (16+4+36) = √56=2√14 (cm) ;
*** volumul = L*l*i =4*2*6 = 48 (cm³) ;
** aria laterala = P(bazei) * i = [2*(4+2)]*6 = 12*6=72 (cm²)
(P= perimetrul bazei) ...
* aria totala = A(laterala) +2*A(bazei) =
= 72cm² + 2*(4*2)cm² = 72+16=88cm²;