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प्रश्न
A rectangular plot 85 m long and 60 m broad is to be covered with grass leaving 5 m all around. Find the area to be laid with grass.
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उत्तर
Length of the laid with grass = 85 - 5 - 5 = 75 m
Width of the laid with grass = 60 - 5 - 5 = 50 m
Hence, the area of the laid with grass is given by
A = 75 × 50
= 3750 sq.m
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