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? a3 b4.8 c9.5 d14.5

Answer 1

30

Step-by-step explanation:

We know that circle A is dilated by a factor is 2.5 to form circle B.

This means that circle B will be 2.5 larger than circle A.

Therefore, the diameter of circle B would be

2.5 x Diameter of circle A

Since

Diameter of circle A = 12

diameter of circle B = 12 * 2.5 = 30

which is our answer!