Odpowiedź:
A)
[tex] a = 15 \: \: \: b = 8\\ {a}^{2} + {b}^{2} = {c}^{2} \\ {15}^{2} + {8}^{2} = {c}^{2} \\ {c}^{2} = 289 \\ c = \sqrt{289} \\ c = 17cm[/tex]
B)
[tex]a = 21 \: \: \: \: c = 35 \\ {a}^{2} + {x}^{2} = {c}^{2} \\ {21}^{2} + {x}^{2} = {35}^{2} \\ {x}^{2} = {35}^{2} - {21}^{2} \\ {x}^{2} = 784 \\ x = \sqrt{784} \\ x = 26cm[/tex]
C)
[tex]a = 8 \: \: \: \: b = 12 \div 2 \: \: \: \: b = 6 \\ {a}^{2} + {b}^{2} = {x}^{2} \\ {8}^{2} + {6}^{2} = {x}^{2} \\ {x}^{2} = 100 \\ x = \sqrt{100} \\ x = 10cm[/tex]
