Question

Which circles have a circumference of 18 units?



Choose all answers that are correct.









A.

a circle with a radius of 9 units








B.

a circle with a radius of 18 units








C.

a circle with a diameter of 18 units








D.

a circle with a diameter of 36 units

Answer 1

@iGreen help

Answer 2

@sleepyhead314 pls help me i am so sad

Answer 3

Circumference = pi * diameter

diameter = 2* radius

Answer 4

b/c people are busy and have their own lives ;)

anyways... diameter = circumference divided by pi

find the diameter (that will give you an answer)
then radius = diameter / 2
find the radius (will give you the other answer)

Answer 5

???

Answer 6

18.26

Answer 7

18 divided by pi

Answer 8

18/2 =9

Answer 9

I said pi

Answer 10

and whats that

Answer 11

3.1415926535897932384626433832795028841971693993...

Answer 12

most people just use 3.14

Answer 13

ok so 3.14

Answer 14

18 divided by 3.14

Answer 15

5.7

Answer 16

wait... are you sure your question is right?
is there a weird squiggle next to the 18 in the original question?

Answer 17

yea

Answer 18

ohhhh
that squiggle is "pi"
18pi divided by pi = 18 = diameter

Answer 19

then radius = 18 divided by 2 =

Answer 20

like its on line with 2 things sticking out like the leeter TT like that

Answer 21

yup that's "pi"

Answer 22

18pi divided by pi = 18 = diameter
*cough*

Answer 23

then radius = 18 divided by 2 =

Answer 24

and that gives me 9

Answer 25

yes so now you have your two answers

Answer 26

9 9

Answer 27

18pi divided by pi = 18 = diameter
*cough*

Answer 28

i know that silly

Answer 29

so that's one of your answers too