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a=√64
a=8cm
Pc=2Pp+3Pśc
Pp=a²√3/4
2Pp=a²√3/2
2Pp=64√3/2
2Pp=32√3 cm²
3Pśc=3*64 =192 cm²
Pc=32√3+192
Pc=32(√3+6) cm²