please tell me the answer of this question [step by step explanation]
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Answer:
a)628m
b) 200m
Step-by-step explanation:
a) distance travelled :
r=d/2
r=200/2=100
circumfrence=2πr
2x3.14x100
=628m
b) 1min 10sec=70sec
distance travelled in 20 sec=628
distance travelled in 70 sec=2198
total rounds =2198/628=3.5
or 3 and 1/2 round
therefore displacement would be diameter of the grond =200m
(displacement is the shortest route from the point to initial position)
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