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A rectangular farm house has a 1km diffe...

A rectangular farm house has a `1km` difference between its sides. Two farmers simultaneously leave one of the vertex of the rectangle for a point at the opposite vertex. One farmer crosses the farmhouse along its diagonal and other walks along the edge. The speed of each farmer is `4km//hr`. If one of them arrives half an hour earlier then the other then the size of farmhouse is .

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Verified by Experts

The correct Answer is:
`[3 km xx 4 km]`
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