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Licze na najlepsze:).
d=10cm
H=1/2 d →H=5 cm
2r=H√3
r=5√3 cm
Pc=2Pp+Pb
Pc=2πr²+2πrH
Pc=2π*(5√3)²+2π(5√3)*5
Pc=2π*(75)+2π(25√3)
Pc=150π+50√3π cm²
Proszę myśle ,że pomogłam