1.

how long will a man take to make a round of a circular field of a radius 21 m cycling at the speed of 8 kilometre per hour​

Answer»

Answer:

circumference of the FIELD= 2× 22/7×21

circumference =132 m

TIME=DISTANCE/SPEED

time =  \frac{132}{8  \times 1000} (in \: hours) \\ time =  \frac{132 \times 3600}{8000}(in \: <klux>SECONDS</klux>)  = 594 \: seconds

Time =594/60=9.9 minutes

So time TAKEN is 594 seconds or 9.9 minutes



Discussion

No Comment Found

Related InterviewSolutions