plsss dauu coroanaaaa

Răspuns:
b) Ab= lxl= [tex]l^{2}[/tex]=> l = [tex]\sqrt{Ab}[/tex]= [tex]\sqrt{64}[/tex]= 8 cm l= 8 cm
a) V= Abxh => h= V: Ab=640 : 64 h= 10 cm
c) At= Al+ 2Ab Pb= 4l= 4x8= 32 cm
Al= Pbxh = 32x10= 320 cm
At= 320+ 2x64= 320+ 128= 448 [tex]cm^{2}[/tex]