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d=17
l=πd
l=17π
wzór na obw. koła to l=2 *Pi *r
l= 17cm pi
jeśli musisz z dokładnością to
17 cm * 3.14 =53,38 cm
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Tyle ma Pi
l=2×8,5π
l=17π
l=17×3,14=53,38
0dp:53,38