Question

The circumference of a circle is 36πcm² What is the area of the circle?

Answer 1

Circumference = 2 pi (radius)
first try to solve for (radius)
could you do that? :)

Answer 2

can you please help? (:

Answer 3

36 pi = 2 pi (radius) divide both sides by (2pi)

Answer 4

my teacher wants pi in the answer

Answer 5

yes, we are going to solve for the radius first, that does not have pi
then plug it into the area formula which will give you an answer that has pi :)

Answer 6

is it 5.73 ?

Answer 7

@jigglypuff314

Answer 8

not quite :)
remember, there is a pi attached to the 36 as well
and so pi divided by pi = 1 so it cancels out
and you get 36 divided by 2 = (radius)

Answer 9

18 ?

Answer 10

correct :)
then the formula for the Area of a circle = pi * (radius)^2
plug in radius = 18 :)

Answer 11

324(pi)cm^2

Answer 12

because my teacher doesn't want pi in our answer

Answer 13

that is correct! :) Good Job! :D

Answer 14

thank you!