Question

The area of a square field is 900msq . How much time will a girl take to run 10 times around it at the rate of 6km/hr

Answer 1

Answer:

0.02 hr or 1.2 minutes

Step-by-step explanation:

Area of square field =900msq

speed of the girl =6km/hr

Side of square field= square root of 900 sq

= √(900)

=30 m

Now perimeter of square field =4 × side

=4×30 m

=120 m = 1 round of the square field

10 rounds of the square field = 10×120m

=1200m=1.2km

time taken to complete one round = distance /speed

=1.2km/6km/hr

=(12/600)×1hr

=0.02hr

=1.2minutes