Odpowiedź:
a) 5x3/2 = 15/2 =7,5cm2
b) 5x6/2 = 30/2 = 15cm2
c) 8x2/2 = 16/2 = 8cm2
d) 2x4/2 = 8/2 = 4cm2
e) 5x2/2 = 10/2 = 5cm2
f) 3x3/2 = 9/2 = 4,5cm2
g) 12x2/2 = 24/2 = 12cm2
h) 8x4/2 = 32/2 = 16cm2
