k =
[tex] {18}^{2} + {k}^{2} = {82}^{2} \\ {k}^{2} = {82}^{2} - {18}^{2} \\ {k}^{2} = 6724 - 324 \\ {k}^{2} = 6400 \\ \sqrt{{k}^{2}} = \sqrt{6400} \\ k = 80[/tex]
l =
[tex] {63}^{2} + {l}^{2} = {65}^{2} \\ {l}^{2} = {65}^{2} - {63}^{2} \\ {l}^{2} = 4225 - 3969 \\ {l}^{2} = 256 \\ \sqrt{{l}^{2}} = \sqrt{256} \\ l = 16[/tex]
m =
[tex] {35}^{2} + {m}^{2} = {37}^{2} \\ {m}^{2} = {37}^{2} - {35}^{2} \\ {m }^{2} = 1369 - 1255 \\ {m }^{2}= 144 \\ \sqrt{ {m }^{2}} = \sqrt{144} \\ m = 12[/tex]
n =
[tex] {14}^{2} + {n}^{2} = {48}^{2} \\ {n }^{2} = {48}^{2} - {14}^{2} \\ {n }^{2} = 2304 - 196\\ {n }^{2} = 2108 \\ \sqrt{{n }^{2} } = \sqrt{2108} \\ n = 45.91[/tex]
(w zaokrągleniu)
Nie byłabym pewna tego ostatniego i na twoim miejscu nie zglaszalabym sie do niego na lekcji. Reszta jest zdecydowanie dobrze rozwiazana
