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plsss dauu coroanaaaa​

Plsss Dauu Coroanaaaa class=

Răspuns :

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]