a)
[tex] \frac{e \times f}{2} = \frac{5 \times 6}{2} = \frac{30}{2} = 15 {cm}^{2} [/tex]
b)
[tex]a \times h = 6 \times 2 = 12 {cm}^{2} [/tex]
c)
[tex] \frac{a \times h}{2} = \frac{6 \times 3}{2} = \frac{18}{2} = 9 {cm}^{2} [/tex]
d)
[tex] \frac{(a + b) \times h}{2} = \frac{(2 + 5) \times 4}{2} = \frac{7 \times 4}{2} = \frac{28}{2} = 14 {cm}^{2} [/tex]
Odp. Największe pole ma figura pierwsza, a najmniejsze pole ma figura trzecia.
