Odpowiedź:
pierwsza figura:
[tex]p \frac{(3.5 + 2.5) \times 1.5}{2} = 9 \div 2 = 4.5c {m}^{2} [/tex]
[tex]p = \frac{1 \times 3}{2} = 6 \div 2 = 3c {m}^{2} [/tex]
[tex]razem = 3c {m}^{2} + 4.5c {m}^{2} = 7.5c {m}^{2} [/tex]
trzecia figura:
[tex]p = 2 \times 3 = 6c {m}^{2} [/tex]
[tex]p \frac{(2 + 3) \times 1}{ 2} = 6 \div 2 = 3c {m}^{2} [/tex]
[tex]razem = 6c {m}^{2} + 3c {m}^{2} = 9c {m}^{2} [/tex]
