A rectangular field is 72 m by 58 m. Keya walks around it at the rate – InterviewSolution

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1.	A rectangular field is 72 m by 58 m. Keya walks around it at the rate of 3 km per hour.How long will she take to make 3 rounds?
Answer» Dimensions of a rectangular field= 72cm y 58cmperimeter of the rectangular field= 2( l+b ) =2×( 72+58) = 2×130 = 260cm∴ Distance taken by Amar in taking two rounds= 3×260m = 780mSpeed of Amar= 3km/hr =3×1000/3000 m/sec = 5/6 m/secTotal time taken by Amar to cover the distance= Distance/speed = 780/5/6 = 780×6/5 = 156×6 = 156×6/60 min. = 15.6 min.

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