Odpowiedź:
a) TRÓJKĄT
OBW = 3×m=3×2 1/8=3×17/8=51/8= 6 3/8
b) KWADRAT
OBW = 4×k = 4 × 1 3/4 = 4×7/4= 7
c) RÓWNOLEGŁOBOK
OBW = 2k + 2m = 2×2 1/8 + 2×1 3/4 = 2×17/8 + 2×7/4 =17/4 + 14/4 = 31/4 = 7 3/4
