A circular jogging track forms the edge of a circular lake that has a diameter of 2 miles. Johanna walked once around the track at the average speed of 2 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?
Select:
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
D=2, and R=1   circumference thus is 2pi miles   we know that she walked 2mph   knowing the formula rt=D, we can deduce that t= D/r   D is 2pi miles and r is 2mph   t = 2pi/2   pi can be rewritten as 22/7   2*22/7 = 44/7 and multiply this by 1/2 = 44/14. This is greater than 3, but less than 3.5, therefore, 3&lt;t&lt;3.5. Answer choice 3 &lt; t &lt; 3.5.
<result>E</result>
A circular jogging track forms the edge of a circular lake that has a diameter of 2 miles. Johanna walked once around the track at the average speed of 2 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?