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a=4cm
Pp=a²√3/4
Pp=4²√3/4
Pp=4√3 cm²
h=a/2
h=4/2
h=2cm wysokość ściany bocznej
Pb=4*1/2 ah
Pb=2ah
Pb=2*4*2
Pb=16cm²
Pc=4√3+16
Pc=4(√3+16) cm²