Treadmill 70904

The runner circled the track 3 times. If he went around it once more, he would run 1km. What is the radius of the treadmill?

Correct answer:

r =  39.79 m

Step-by-step explanation:

(3+1)o=1km 4o=1000 m 4 2π r=1000  r=4 2π1000=4 2 3.14161000=39.79 m



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