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b = 13 cm
Pp = ?
Pb = ?
Pp = 6*a²√3/4
Pp = 6*10²√3/4
Pp = 6*100√3/4
Pp = 6*25√3
Pp = 150√3 cm² << pole podstawy
Pb = 6*1/2*a*Hb
Hb²+(1/2a)² = b²
Hb²+5² = 13²
Hb² = 169-25
Hb² = 144
Hb = √144
Hb = 12 cm
Pb = 3*10*12
Pb = 30*12
Pb = 360 cm² << pole pow. bocznej