Wzor na pole trapezu
[tex] \frac{(a + b) \times h}{2} [/tex]
Dane:
[tex]a = 11 \\ b = 8 + 11 = 19 \\ h = 15[/tex]
Obliczenia
[tex] \frac{(11 + 19) \times 15}{2} = \frac{30 \times 15}{2} = 15 \times 15 = 225[/tex]
Obwód trapezu
11+17+8+11+15=30+17+15=45+17=62
