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a=1
Pc= Pp+ Pb
Pb= 2(0,5ac+0,5a²)
Pc= a²+2(0,5ac+0,5a²)
a²+a²=c² c - wysokość trójkąta
2a²=c²
c=√2a
c=√2
Pc= a²+2(0,5ac+0,5a²)
Pc= 1+2(0,5*1*√2+0,5*1)
Pc=1+√2+1
Pc= 2+√2