Răspuns:
[tex]a) \: ip^{2} = {3}^{2} + {4}^{2} \\ ip^{2} = 9 + 16 \\ {ip}^{2} = 25 \\ ip = \sqrt{25} \\ ip = 5 \\ b) \: {ip}^{2} = {15}^{2} + {20}^{2} \\ {ip}^{2} = 225 + 400 \\ {ip}^{2} = 625 \\ ip = \sqrt{625} \\ ip = 25 \\ c) \: {ip}^{2} = {18}^{2} + {24}^{2} \\ {ip}^{2} = 324 + 576 \\ {ip}^{2} = 900 \\ ip = \sqrt{900} \\ ip = 30 \\ [/tex]
