Draw a diameter through the center of the circle. Any radius of this circle is 1/2 the length of the diameter. Thus, if we divide the diameter into two equal parts, we have two lengths that form the ratio 2:1, where 2 represents the diameter and 1 the radius.
I think it's the 3rd bullet I hope I help
Answer:
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Answer:
The length of the radius of the circle K is 
Step-by-step explanation:
we know that
The triangle CDE is a right triangle with the 90 degree angle at point E
so
Applying the Pythagoras Theorem
Find the length of CD (diameter of the circle K)

substitute the values



Find the radius
Remember that the radius is half the diameter
so

About 94 probably. Just so you know you probably do but there are about 2 and 1\4 centimeters in a inch.