Odpowiedź:
a)
P - pole = 1/2 * 7 cm * 4 cm = 7 cm * 2 cm = 14 cm²
b)
P = 1/2 * 6 cm * 8 cm = 3 cm * 8 cm = 24 cm²
c)
P = 1/2 * 9 cm * 6 cm = 9 cm * 3 cm = 27 cm²