College Math CLEP Prep Practice Exam

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What is the circumference of a circle with a radius of 6?

The correct answer is: 72

The circumference of a circle is found by using the formula 2πr, where r is the radius of the circle. In this case, the radius is given as 6. Therefore, the circumference would be 2π x 6 = 12π or approximately 37.7. The other options provided are incorrect because they do not take into account the value of π, which is a constant value of approximately 3.14. Option A is simply half of the correct answer, Option B is double the correct answer, and Option C is triple the correct answer. So while these options may seem like logical estimates, they are not the exact value of the circumference. Option D, 12π, is the correct answer as it includes the value of π and multiplied by the given radius of 6.