a). 2L=3l=5h=600
2L=600=>L=600÷2=
=300
3l=600=>l=600÷3=200
5h=600=>h=600÷5=
=120
(2L+3l+5h)²=(600+600++600)²=1800²= =324000000
b) V=L×l×h=300×200×120=7200000
c) A=2×(L×h+l×h+L×l)
A=2×(300×120+200×
×120+300×200)=
=2×(36000+24000+
+60000)=2×120000=
=240000
Dar de ce clasa este aceasta problema?