Question

Multiple Choice

For all questions, use 3.14 for r.
1. Which of the following correctly relates the measures of the diameter (d) and radius (r) of a
circle?
(1 point)
d =r/2
r = 2d
r =d/2
d =2/r

Answer 1

The radius of a circle is the distance from any point on the circle to the center of the circle, thus it is half of the diameter.

d=2r and if we divide both sides by 2

r=d/2

Answer 2

r = d/2.....the radius is half the diameter