 
<translate> Yankin murabba'i mai faɗi na waje = 21 × 16 = 336 m2 Yankin rectangle na ciki = 17 × 12 = 204 m2 Yankin da ake buƙata = (336 â € <unk> 204) = 132 m2 Saboda haka, amsar ita ce (B). <eng> Area of the outer rectangle = 21 Ã— 16 = 336 m2
Area of the inner rectangle = 17 Ã— 12 = 204 m2
Required area = (336 â€“ 204) = 132 m2
Thus, the answer is (B). 