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a= 6√3 /3= 2√3
2a= 4√3
Ob= 6+4√3+2√3= 6+8√3
sin60 = czyli
√3c = 18
c=
c=
c= 6√3
6√3 = 2b
3√3 = b
więc 6 + 3√3 +6√3 = 6 + 9√3
tak gwoli ścisłości ^^