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obw = 43.96
43.96 = 7.28 * r /:7.28
r= 6.03
pole = 3.14 * 6.03²
pole = 114.33
O=43,96
43,96=2*3,14*r
6,28r=43,96/6,28
r=7
P=pi*r do kwadratu
P=3,14* 7 do kwadratu
P=3,14*49
P=153,86