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x+3- tworząca stożka
(x+3)^2=x^2+25
x^2+6x+9=x^2+25
6x=16
x=2i 2/3
P=3,14*5*5*+3,14*5*5 i 2/3
P=78,5+15,7*5,6
P=78,5+87,92
P=166,42
P z dokładnością=166cm^2