Question

Find the circumference of the circle. Round to the nearest tenth. The middle of the circle is 44mm

Answer 1

Does middle of circle mean diameter or radius?

Answer 2

If 44 mm is the diameter >>

C = pi * r^2

C = 3.14 * 22^2

c = 1519.8 mm

http://www.coolmath.com/reference/circles-geometry.html

Answer 3

Not sure, it has a line through the middle of the circle with 44mm

Answer 4

Study the site I posted for pictures of a diameter, a radius, and a circumference.

Answer 5

Does the line cut the circle in half? If so, it is a diameter. Otherwise it would be a radius.

C = pi * d

Or C = 2 * pi * r

d represents length of diameter and r represents length of radius.

Use 3.14 for pi.

Answer 6

Oops -- I was wrong. Thanks for correcting me, rbowh.

I was finding the area, not the circumference.

C = 3.14 * 44

C = 138.2

Answer 7

Ok thank you all. I got 138.16
So I round it 138.2

Answer 8

1. A
2. D
3. A
4. C

Answer 9

is Kinsey right????????????????????wtf

Answer 10

I guess...

Answer 11

yes kinsey is right i just got a 100% on connexus algebra :D