Question

ajutati ma va rog la ex 8 dau coroana​

Answer 1

lungimea traseului:x

x=AB+BC+CD+DE+EF+FG+GH+HI+IJ+JK

$x = 10 \sqrt{20} + 10 \sqrt{20} + 2 \sqrt{125} + 2 \sqrt{125} + 2 \sqrt{125} + 10 \sqrt{20} + 2 \sqrt{125} + 2\sqrt{125} + 2 \sqrt{125} + 2 \sqrt{125}$

$x = 30 \sqrt{20} + 14 \sqrt{125}$

$\sqrt{20} = 2 \sqrt{5} \\ \sqrt{125 } = 5 \sqrt{5}$

$x = 30 \times 2 \sqrt{5} + 14 \times 5 \sqrt{5} \\ x = 60 \sqrt{5 } + 70 \sqrt{5} \\ x = 130 \sqrt{5}$

drumul are in total 130 rad 5 km.