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Pc=288
V=Pp*H
Pp=a*h
a=12
h=?
sin 30= 1/2
h/8=1/2
h=4
Pp=12*4=48
Pc=2Pp+Pb
288=2*48 +Pb
Pb=192
Pb=2*12*H+2*18*H
192=24H+36H
60H=192
H=3,2
V=Pp*H
V=48*3,2=134,4
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