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Circle Area and Circumference

Please solve the following problem:
Circles A, B, and C have radii with measures of x centimeters, 3x centimeters, and 6x centimeters, respectively.
What is the ratio of the radius of Circle B to the diameter of Circle C?

 

F. 1:2

G. 1:4

H. 1:12

J. 2:1

K. 4:1

 

Scroll down or click here for the answer!

 

 

Students need practice decoding ACT® questions so they will not feel intimidated by the test. Unless students are answering practice questions that perfectly emulate the ACT®‘s approach and level of rigor, they are not using their time wisely. MasteryPrep has taken an enormous amount of care to ensure that every practice question appearing in the ACT® Mastery workbooks is of the highest quality

 

 

 

 

 

 

The correct answer is G. You already know that the radius of Circle B is 3x. To find the diameter of Circle C, multiply its radius by 2. The diameter of Circle C is 6x ∙ 2 = 12x. Now you can find the ratio between these two values. Remember to simplify your answer.3x:12x
3:12
1:4

 

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