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b=4cm
Pc=2*a*H+2*a*b+2*b*H
V=Pp*H
H=?
d=? (przekątna podstawy)
H/d=tg60°
d²=3²+4²=9+16=25
d=5cm
H=tg60°*d=5√3cm
Pc=2*3*5√3+2*3*4+2*4*5√3=24+70√3cm²
V=3*4*5√3=60√3cm³