AI:EF

Step-by-step explanation:

1. By definition, the diameter that a one is double the radius, then:

D=2r

wherein D is the diameter and r is the radius:

2. The AI is the lenght the the radius that the circle and also EF is the length of the diameter that the circle. Keeping this ~ above mind you have: or 1:2

3. Then, AI and also EF kind the ratio:

1:2

As given allude A is the center of the circle.

You are watching: In the image, point a marks the center of the circle. which two lengths must form a ratio of 1:2?

We will certainly answer this concern by considering all the options.

Option 1. FA : AE < Both FA and also EA space radius of circle .So their ratio can"t be same to 1:2.>

Option 2. CB : FE < CB is a chord and FE is a Diameter as length of Chord no given, So us can"t Predict around their Ratio.>

Option 3: FE : AH

Option 4 : AH : FE

Option (d) AH : FE = Radius : Diameter=1:2 is true.

EF:AI

Step-by-step explanation:

E to F is dual that that AI and also it requirements to be in the front because it is 2:1, no 1:2. Finest of luck through the rest.

option b.

Step-by-step explanation:

we understand that

In a circle the proportion of the diameter come the radius is equal to because  so

In this difficulty

EF is a diameter

therefore

Draw a diameter v the center of the circle. Any radius that this circle is 1/2 the length of the diameter. Thus, if we divide the diameter right into two same parts, we have two lengths that type the ratio 2:1, where 2 represents the diameter and 1 the radius.
I expect this helps you I would go through D) AH:EF. The easiest relationship amongst the parts of a circle the would have the proportion of 1:2 would be that of a radius to a diameter. Among the choices, the one the matches the 1:2 proportion would be AH (a radius) and EF (a diameter).

Step-by-step explanation:

the the very least value the end of the data presented is 5, probably if you write-up a photo with the i could a tiny more.

step-by-step explanation:

4x-10=2x+3 +10. +104x=2x+13-2x. -2x2x=13/2. /2x=6.5

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