Respuesta :
Answer: AI:EF
Step-by-step explanation:
1. By definition, the diameter of a circle is twice the radius, then:
D=2r
Where D is the diameter and r is the radius:
2. The AI is the lenght of the radius of the circle and EF is the length of the diameter of the circle. Keeping this on mind you have:
[tex]\frac{AI}{EF}=\frac{r}{D}=\frac{r}{2r}=\frac{1}{2}[/tex] or 1:2
3. Then, AI and EF form the ratio:
1:2