Odpowiedź:
obliczamy z twierdzenia Pitagorasa
a)
[tex] {2}^{2} + {2 }^{2} = {c}^{2} [/tex]
[tex]4 + 4 = {c}^{2} [/tex]
[tex] {c}^{2} = 8[/tex]
[tex]c = \sqrt{8} = \sqrt{4 \times 2} = 2 \sqrt{2} {cm}^{2} [/tex]
d)
[tex] {5cm}^{2} + {5cm}^{2} = {c}^{2} [/tex]
[tex] {25cm}^{2} + {25cm}^{2} = {c}^{2} [/tex]
[tex] {50cm}^{2} = {c}^{2} [/tex]
[tex] {c}^{2} = \sqrt{25 \times 2 \: {cm}^{2} } = 5 \sqrt{2} [/tex]
Szczegółowe wyjaśnienie:
umiem tylko te dwa
