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Pp=60cm²
Pb= 4*10*7
Pb=280cm²
Pc=2*60+280
Pc=120+280
Pc=400cm²
V=60*7
V=420cm³
h = 6 cm
H = 7 cm
V = Pp*H
Pp = a*h
Pp = 10*6
Pp = 60 cm²
V = 60*7
V = 420 cm³
Pc = 2*Pp+4aH
Pc = 2*60+4*10*7
Pc = 120+280
Pc = 400 cm²