Odpowiedź :
[tex]p = \frac{(a + b) \times h}{2} \\ a = 8 \\ b = 8 + 5 = 13 \\ h = 6 \\ p = \frac{(8 + 13) \times 6}{2} = \frac{21 \times 6}{2} = 63cm {}^{2} [/tex]
Pozdrawiam :)
[tex]p = \frac{(a + b) \times h}{2} \\ a = 8 \\ b = 8 + 5 = 13 \\ h = 6 \\ p = \frac{(8 + 13) \times 6}{2} = \frac{21 \times 6}{2} = 63cm {}^{2} [/tex]
Pozdrawiam :)