Answer:
40s units²
Step-by-step explanation:
Area of frame = area of bigger rectangle - area of smaller one
Area of big rectangle = length × breadth
= 12 × 6s = 72s unit²
Area of smaller rectangle = length x breadth
= 8 × 4s = 32s units²
Area of frame = 72s - 32s
= 40s units²
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