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1 va rog frumos :) e urgent

1 Va Rog Frumos E Urgent class=

Răspuns :

1 a ) S=2(Lxl+Lxh+lxh)=
2x(250x30+250x80+30x80)=2(7500+20000+2400)=2x 29900=59800
b)V=Lxlxh=250x80x30=600000 cm³=600dm³=600l
c)9x420=3780
10% din 3780=378
3780-378=3402lei