Question

A body covers one complete revolution around a circular park of circumference 176 m in 4 minutes. Find the displacement of body after 6 minutes

Answer 1

Total distance around the track is 176m.
Speed of the body = total distance covered/total time taken
                                 = 176/4
                                 =44metres/min
Find the distance covered in 6 minutes:
                           if 1 min= 44m
                           then 6 min=(44X6)/1 =264
There the distance covered around the track from starting point = 264-176
                                                                                                             =88 metres

This corresponds to distance around half the track, which means displacement corresponds to 180 degrees
Hence, the displacement distance is the diameter.

total distance around the track= 176m
Circumference=$\pi$Xdiameter.....176=22/7 XD
                                                                       D=176X7/22
                                                                     =56 (therefore the displacement is                                                                                            56meters)

Answer 2

Answer:

56 m

Explanation:

If the body covers 1 round in 4 minutes then it would have covered 1 1/2 rounds in 6 minutes.

So,  2πr=176

      2*22/7*r=176

      r=176*7/22

     r=8*7

      r=56 m