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29 September, 22:20

A circular jogging track forms the edge of a circular lake that has a diameter of 2 miles. Johanna walks once around the track at the average rate of 3 miles per hour. If t represents the number of hours it took Johanna to walk completely around the lake, which of the following is a correct statement? A. 0.5< t < 0.75

B. 1.75< t < 2.0

C. 2.0 < t < 2.5

D. 2.5 < t < 3.0

E. 3 < t < 3.5

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  1. 29 September, 22:38
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    Answer:C 2.0< t < 2.50

    Step-by-step explanation:

    Diameter of circular lake = 2 miles

    Radius of the circular lake = 1 mile

    Circumference of the circular lake = 2 pi

    Speed of Joanna = 3mph

    Time t = distance / speed = circumference of lake / speed

    t = 2 pi / 3 = (2 * 3.142) / 3

    t = 6.284/3 = 2.09

    This is greater than 2 but less than 2.5, therefore statement C is correct
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