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13√3*√3=13*3=39 - wysokosc sciany bocznej
Pc=Pp+Pb
Pp=13√3*13√3
Pp=507
Pb=a*h/2
Pb=13√3*39/2
Pb=438,75*4
Pb=1755
Pc=1755+507=2262
V=1/3Pp*H
Pp=507*1/3
Pp=169
H=13√3≈22,5/2=11,25
2a=13√3*2=26√3≈45
a²+b²=c²
11,25²+b²=45²
126,6+b²=2025
b²=1898,4
b=43,6
H=43,6
V=169*43,6
V=7368,4