Question

If the circumference of a circle is 32 in, find the radius. Find the radius of the circle.

Answer 1

Are there any answer choices?

Answer 2

Hello and welcome to Open Study! :)

Circumference of a Circle = 2 pi r
so when 32 = 2 pi r
and you are looking for r (radius)
then divide both sides by 2pi
so r = 32/2pi =
which can be simplified

Answer 3

yes,
A. 16 in
B. 10.2 in
C. 2.54 in
D. 5.1 in

Answer 4

okay, so once you find the radius in terms of pi
= 16/pi
then plug it into your calculator :)

Answer 5

i got 10.1911

Answer 6

5.09554

Answer 7

which can be rounded to match your question options :)

Answer 8

so the answer is D

Answer 9

correct :D

Answer 10

thank you (:

Answer 11

you're welcome :)

Answer 12

First let's go over the way to find the circumference of a circle. We know that it is:
2*3.14*r.

32=2*3.14*r

Divide 32/3.14=10.19

Now divide 10.19/2=5.09

5.09 rounds to 5.1

Answer is D.