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The are of a square field is 60025 square meter. a man cycles along its boundary at 18km per hour. in how much time will he return at the starting point?

Area of the field= We know the formula (for a square). ⇒60025=side² ⇒side=√60025 ⇒side=+245 m or - 245 m. Neglecting -ve value side=245 m. ⇒Perimeter=4*Side(For a square) ⇒P=245*4 m (Which is also the total distance) ⇒Speed= 18 km/h ⇒18 km/h=18* m/s=5 m/s. ⇒Time= ⇒ =49*4 seconds =196 seconds. Ans:The required time is 196 seconds. --------------------------------------------------------------------- Please mark it as the best.