Va rog repede ca mâine am test !!!
Dau coroana !

a) [tex]A_{t}[/tex] = 2 * ( 4*12+3*12+3*4)
[tex]A_{t}[/tex] = 2 * 96 = 192 [tex]cm^{2}[/tex]
b) V = L*l*h = 3*2*12 = 72 [tex]cm^{3}[/tex]