Question

Circle A is dilated by a scale factor of 2.5 to form circle B. If the diameter of circle B is 12, what is the diameter of circle A? Group of answer choices 3 4.8 9.5 14.5

Answer 1

The diameter of circle A is 4.8. The correct option is the second option- 4.8

Calculating the diameter of a circle

From the question, we are to determine the diameter of circle A

From the given information,

Circle A is dilated by a scale factor of 2.5 to form circle B

That is,

If the diameter of circle A is d, then the diameter of circle B will be 2.5d

Also, from the given information,

Diameter of circle B = 12

Then, we can write that

2.5d = 12

∴ d = 12/2.5

d = 4.8

Hence, the diameter of circle A is 4.8. The correct option is the second option- 4.8

Learn more on Calculating the diameter of a circle here: brainly.com/question/10907234

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