PILNE!!
1. Jakie pole ma dwunastokąt foremny wpisany w okrąg o promieniu 8cm!
r=8P=3a²(2+√3)=3*8²(2+√3)=716,5537551 lub =192(2+√3)=192+384√3
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r=8
P=3a²(2+√3)=3*8²(2+√3)=716,5537551 lub =192(2+√3)=192+384√3