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 =

Question

bija089 [108]

3 years ago

5

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

Mathematics

2 answers:

adelina 88 [10] · Answer 1 · 2022-03-29T10:45:41+03:00

adelina 88 [10]3 years ago

6 0

Answer: B) 4

Step-by-step explanation:

Got this right on USA test prep

BabaBlast [244] · Answer 2 · 2022-03-29T09:42:12+03:00

Answer:

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.