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Suresh started cycling along the boundaries of a square field from corner point A after half an hour he reached the corner point C diagonally opposite to

A.if his speed was 8k/hr what is the area of the field in square km?


Distance covered, 2S = 8/2 => S=2. Hence, S²=4 square units
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Is the answer 525
i don't know...i don't have options with me
but can u explain it how u got the ans...
I would if the answer is right
sorry i don't have the options

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See diagram.  there seems to be confusion about this.  Drawing a diagram helps often in such cases.

Distance travelled along the perimeter = 2 a 
   Speed = 8 km /hr

   Time duration = 1/2  hr

        2 a = 8 * 1/2 = 4 km         =>  a = 2 km

   Area of square field = 2² = 4 km²

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