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Answer is 37.75 m²
Step-by-step explanation:
Length of platform, L=10m
Breadth of platform, B=5m
Area of platform, A =L×B = 10×5 = 50 m²
Length of carpet, s=3.5m
Area of carpet, a = s²= 3.5*3.5 =12.25 m²
∴Area of platform not covered = A-a = 50-12.25 = 37.75 m²
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