A dog was tied to a wooden stake at the middle of the garden. The dog runs 21.98 meters to form a circle. What is the distance of the dog to the center of the circle?
a. 2.5 m
b. 3.5 m
c. 4.5 m
d. 5.5 m
a. 2.5 m
b. 3.5 m
c. 4.5 m
d. 5.5 m
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B. 3.5 m
C = 2πr
21.98 = 2*3.14r
21.98 = 6.28r
6.28r = 21.98
6.28 6.28
r = 3.5
Therefore, the distance of the dog to the center of the circle is 3.5m.