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a=4
b=4
h=8
Pp=1/2*16=8
V=1/3*Pp*h=1/3*8*8=64/3=21 i 1/3 wiec PRAWDA
Pp=8
w²=h²+(2√2)²=64+8=72
w=6√2
Pc=Pp+1/2·4√2·w+4·8=8+24+32=64 wiec prawda
Pc=to pole kwadratu 8*8=64
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