Question

select the correct answer from each drop - down menu. point a is the center of this. the ratio of the lengths of to is 2:1.

Explanation:

Step1: Recall circle - related facts

In a circle, the diameter is twice the radius.

Step2: Identify diameter and radius

If we assume a radius and a diameter in the circle, say the diameter is a line passing through the center and the radius is from the center to the circle. If the radius is \(r\) and the diameter is \(d\), \(d = 2r\).

Answer:

The ratio of the lengths of \(d\) (diameter) to \(r\) (radius) is \(2:1\). So if \(BC\) is a diameter and \(EF\) is a radius (assuming appropriate line - segment identifications), the answer is: First blank: \(BC\), Second blank: \(EF\)