Wzór na pole :
P = ½ * (a + b) * h
a)
a = 3 cm
b = 5 cm
h = 7 cm
P = ½ * (3 + 5) * 7 = ½ * 8 * 7 = 28 cm²
b)
a = 11 dm
b = 9 dm
h = 12 dm
P = ½ * (11 + 9) * 12 = ½ * 20 * 12 = 120 dm²
c)
a = 3 m
b = 5 m
h = 1 m
P = ½ * (3 + 5) * 1 = ½ * 8 * 1 = 4 m²
