[latex]P=pi r^2[/latex] [latex]Ob=2 pi r[/latex] zad. 1 [latex]r=2[/latex] [latex]P= pi 2^2 = 4 pi[/latex] zad. 2 [latex]r=3[/latex] [latex]Ob=2 pi * 3 = 6 pi[/latex] zad. 3 [latex]Ob=4 pi[/latex] [latex]2 pi r = 4 pi[/latex] :/2π [latex]r=2[/latex] [latex]P= pi 2^2 = 4 pi[/latex] zad. 4 [latex]P=25 pi[/latex] [latex]pi r^2 = 25 pi[/latex] /:π [latex]r^2=25[/latex] [latex]r=5[/latex] [latex]Ob=2 pi * 5= 10 pi[/latex]
zad.1 [latex]P= pi r^{2} [/latex] [latex]r=2[/latex] [latex]P= pi 2^{2} =4 pi [/latex] zad.2 [latex]l=2 pi r[/latex] [latex]r=3[/latex] [latex]l=2 pi 3=6 pi [/latex] zad.3 [latex]l= 4 pi [/latex] [latex]2 pi r=4 pi [/latex] [latex]2r=4/:2[/latex] [latex]r=2[/latex] [latex]P= pi r^{2} = pi 2^{2} = 4 pi [/latex] zad.4 [latex] pi r^{2} = 25 pi [/latex] [latex] r^{2} = 25/* sqrt{} [/latex] [latex]r=5[/latex] [latex]l=2 pi r=2 pi 5=10 pi [/latex]
