Question

Which of the following correctly relates the measures of the measures of the measures of the diameter (d) and radius (r) of a circle
A) d=r/2
B) r=2d
C) r=d/2
D) d=2/r

Answer 1

Hey!

Diameter is ½ of the radius. To find the radius when you have the diameter, divide by 2.

For example, if the diameter is 12, the the radius would be:

$12 \div 2 = 6$

That means your answer will be C.

$\framebox{Answer is C) r = d/2}$

Answer 2

Hello! The correct answer is: $\boxed{ \bf C) r=d/2}$ _____________________________

The radius of a circle is half the diameter. In other words, if you divide the diameter by 2, you get the radius. Thus, the correct answer is option C).