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प्रश्न
Find the area of a square park whose perimeter is 320 m.
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उत्तर
Perimeter = 320 m
4 × Length of the side of park = 320
Length of the side of park = `320/4 = 80 m`
Area = (Length of the side of park)2 = (80)2 = 6400 m2
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