Question

A man walks around a circular park 4times in 12minutes. The radius of the park is 49 m. Find the speed of the man in km\h.(use π = 22\7)

Answer 1

Step-by-step explanation:

4times=12×4=48min= 0.8 h

r=49 m

c=2^r

= 2×22/7×49= 154×2=308m

= 308÷1000

= 0.308 km

speed= distance/time

= 0.308/0.8

= 0.385 km/h