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b)64*8=512 cm 3
P=25cm2
p=a*a
a=5cm
h=4cm
V= 5cm*5cm*4cm=100cm3=0,1l
b) V=a*a*a
P=64cm2
P= a*a
a=8cm
V= 8cm*8cm*8cm=512cm3
V= 5×5×4
V= 100 cm³
b) V= 8×8×8
(V= 8³)
V= 512 cm³