Question

Find the time taken by a person in walking along the boundary of a square field of area 40 000 m^2 at a speed of 4 km/h.​

Answer 1

Explanation:

Area = 40000 m^2

=> side of square field = √40000 = 200m

perimeter = 200 x 4 = 800m = 0.8 km

speed = 4km/h

time taken = distance / uniform speed

= 0.8 / 4

= 0.2 hrs

= 12 minutes

Answer 2

Answer:

hello

here is your answer,

here, area of square is 40000m²

now, side² = 40000

so, side = 200m

now, perimeter of square = 200×4

= 800m

now, distance= 800m= 0.800km

now, t = d/s

t = .800km/4

so, time = 200seconds

time = 3.34minutes

hope you like it