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21 April, 13:30

Given a circle with measures of (C, d, and r) and a circle with measures of (C', d', and r'), what is r' if C/C' = 0.75 and d = 6.0?

A) 2

B) 4

C) 8

D) 12

+2
Answers (2)
  1. 21 April, 13:38
    0
    B

    Step-by-step explanation:

    All circles are similar and therefore proportional. C/C' is the ratio of Circle C to Circle C'. Since it is 0.75, this means that C is 75% of C'. We know that radius of C will also be 75% of the radiuc of C'. We can the radius because we know the diameter of Circle C is 6. The radius is therefore 3. 3 is 75% of 4. So r/r' or 3/4=0.75. r / must be 4.
  2. 21 April, 16:06
    0
    Answer: B) 4

    Step-by-step explanation:

    Got this right on USA test prep
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Home » Mathematics » Given a circle with measures of (C, d, and r) and a circle with measures of (C', d', and r'), what is r' if C/C' = 0.75 and d = 6.0? A) 2 B) 4 C) 8 D) 12
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