The perimeter could be anything between 136 and 156 inches. We can't figure it out until we know the length of the third side, and that could be anything between 58 and 78 inches.
a perimiter is always the distance all the way round. So it will be 6+ 8+10 but do it in stages 6+8=14 now add the last piece 14+10=24 (6+8+10=24) it does not matter if it is feet or miles or mm. Think of walking round the triangle. Hope that helps.
i like mw2 and have 2 acounts prestiged, one is 2nd prestige lvl 68and another one 1st prestige about lvl 16
f(x) = 2x² f(x) = 136 → 2x² = 136 → x² = 68 → x = ±√68 As the positive value is required, x = √68 ≈ 8.246