Question

The area of a sq field is 600025m2 a man cycles along the boundary at 18/hour in how much time will he return to the starting point

Answer 1

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.