<p>From 05-06 practice test</p>
<p>Which of the following expresses the number of meters a contestant must travel in a 3-lap race where the course is a circle of radius R meters?</p>
<p>a. 3R
b. 3piR
c. 3piR^2
d. 6R
e. 6piR</p>
<p>What is the answer and why?</p>
<p>I believe the answer is E.</p>
<p>This is because to find the circumference of the circle, the equation is 2piR. Since you are going around 3 times, its (3)2piR. Therefore, it becomes 6piR</p>
<p>It is E…</p>
<p>you use circumference – 2piR… so 2pi(3) = 6piR –> E</p>