College Math CLEP Prep Practice Exam

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Unlock your mathematical potential and conquer the College Math CLEP exam with ease! Introducing our powerful College Math CLEP Prep Practice Exam, your ultimate tool for exam readiness.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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How do you calculate the circumference of a circle?

pi*d
2pi*d
pi*r2
2 pi*r

The correct answer is: 2 pi*r

To calculate the circumference of a circle, you can use the formula C = 2πr, where r is the radius of the circle. This is the same as 2 times pi times the radius, which is why option D is the correct choice. Option A, pi*d, only gives the diameter of the circle and not the circumference. Option B, 2pi*d, gives twice the value of the circumference. Option C, pi*r2, is the formula for the area of a circle, not the circumference. Therefore, option D is the only correct option for calculating the circumference of a circle.