Question

The area of a square plot is 4900msquare.If a man walks around it with a speed of 4km per hour, then how much time will he take to go round it once






​

Answer 1

Answer:

speed = distance÷time

time=distance÷speed

4900÷4=1225 hours

Answer 2

Answer:

Area of square = side^2 = 4900 sq m

side^2 = 4900

side = _/4900

side = 70 m

Speed = 4 km/h

In m/s:

4 km/h = 4×5/18

= 10/9 m/s

Time = Distance/Speed

Time = 70 ÷ 10/9 = 70 × 9/10

Time = 63 seconds

_________________