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V=2^3=8cm^3
b)Á=36.6=216cm^2
V=36.6=216cm^3
c)L=36:4=9cm
Á=9^2.6=486cm^2
V=9^3=729cm^3
d)d=Vl^2+l^2
4=V2l^2
4^2=2l^2
16/2=l^2
V8=l
V4.2=l
2V2=l
A=(2V2)^2.6=48cm^2
V=(2V2)^2..2V2=8.2V2=16V2