Question

Which circles have a circumference of 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
HELP WILL MEDAL I THINK A :)

Answer 1

@igreen

Answer 2

@Directrix

Answer 3

help

Answer 4

help

Answer 5

@Directrix

Answer 6

@mathmale

Answer 7

@mathwizzard3

Answer 8

@Atsie

Answer 9

@mathmale

Answer 10

@mathmale

Answer 11

help @mathmale

Answer 12

it is 18 pi units for the question

Answer 13

the problem is that you didn't specify the circumference:

Which circles have a circumference of units

Answer 14

it is 18pi @mathmale

Answer 15

Well there is more then one answer. Okay, well you have to multiply the radius by 2, or double it.
SO A is an obvious one. And since the diameter is simply double the radius, it is the same thing.

Answer 16

Given the circumference, 18pi, and remembering that c=2pi r, or c=pi d, find the radius and diameter of the circle in question.

Answer 17

so 18=2*D right??

Answer 18

@mathmale

Answer 19

and get 9