 
<translate> Mpaghara nke mpụga rektangulu = 21 × 16 = 336 m2 Mpaghara nke rectangle dị n'ime = 17 × 12 = 204 m2 Mpaghara achọrọ = (336 - 204) = 132 m2 N'ihi ya, azịza ya bụ (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). 