Obliczenie: UQSJbK - 1
S_boc =
π
* r* l
π
* r* l|
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S_boc = π* r* l$$S_{boc}$$ = $$\pi\cdot r\cdot l$$
* r* l$$S_{boc}$$ = $$\pi\cdot r\cdot l$$S_boc = l* r* π$$S_{boc}$$ = $$l\cdot r\cdot \pi$$
$$S_{boc}$$ = $$l\cdot r\cdot \pi$$* r* l|
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* r* l$$S_{boc}$$ = $$\pi\cdot r\cdot l$$$$S_{boc}$$ = $$l\cdot r\cdot \pi$$