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h=6√3/2=3√3
trójkąt DCS
h=4√3/2=2√3
trójkąt EDC
h=4√3/2=2√3
h=3√3+2√3+2√3=8√3
9.
sin30⁰=h/6
½=h/6
h=3
36-9=x² x²=25 x=5
a=8
b=8+(5*2)=18
P=½(18+8)*3=39