Question

Can someone check this ?
Find the area of a circle that has a radius of 14 feet. Round your answer to the nearest hundredth.
A=pi R^2
3.14x14=43.96 Then what?

Answer 1

You forgot one step. Before multiply 3.14 with the radius you have to square it

Answer 2

@Mackenzie2013 look at the equation. u wrote A=pi time r^2 but u didn't do it. 14^2=196....196 times pi=..?

Answer 3

Well square the radius, not pi

Answer 4

Wait! I seee!

Answer 5

So then you take 196 and times it by 3.14

Answer 6

yes

Answer 7

@lacrosseplayer22 can you help me out with one more?

Answer 8

sure

Answer 9

Find the area of a circle whose circumference is 31.4 centimeters.

A =

Answer 10

The circumference of a circle is C=2pi(r)
we are given that 31.4=2pi(r)
to find the radius we must divide 31.4 by 2pi, can you do that?

Answer 11

yes

Answer 12

2pi is that pi times two?

Answer 13

yes it is

Answer 14

0.2?

Answer 15

so if radius is 5 then the are should be 78.53.... right @Venny

Answer 16

I am here calm down a second Yes the radius is 5, area of a circl A=pi(r)^2
A=pi(5)^2
A=25pi
A=78.54

Answer 17

sorry

Answer 18

So 78.54 is the answer?

Answer 19

Yes that is, also 0.2 is not the same thing as *2, 0.2 is the same thing as 2/10 which is less than 1 so it makes it smaller.

Answer 20

It says its wrong..

Answer 21

?? that doesn't make sense

Answer 22

Yeah we didn't mess up anywhere

Answer 23

Somethings gotta be messed up.

Answer 24

Find the area of a circle whose circumference is 31.4 centimeters.

A = cm2

Answer 25

Thats the question

Answer 26

Did you forget to label it with cm^2?

Answer 27

Yes ... Facepalm

Answer 28

wait no

Answer 29

okay this is how it was typed.
Find the area of a circle whose circumference is 31.4 centimeters.

A = cm2

Answer 30

got it!

Answer 31

oh no she's right. im wrong. if circumference=pi times diameter and Area= Pi times r^2 then we do 31.4 divided by 3.14 is 10. so we know r^2 is 10. to find r we have to find the root of 10. then we do A=pi r ^2

Answer 32

face palm goes to me

Answer 33

2r=diameter