Question

the diameter of a tire is 2.5ft. use the mearsurement to answer part a and b.

Answer 1

let ,e give you part a

Answer 2

fin the cirumference of the tire round your answer to the nearest whole number.thats part a.

Answer 3

2.56

Answer 4

http://openstudy.com/study#/updates/512d0847e4b02acc415e09d9

Answer 5

now part b.about how many times will the tire have to rotate to travel 1 mile>:)(1 mi=5,280ft)

Answer 6

mi= 50286

Answer 7

@InYourHead what u about to say please

Answer 8

idk

Answer 9

link http://openstudy.com/study#/updates/512d0847e4b02acc415e09d9

Answer 10

@ellis101

Your answer for part A was wrong.

The formula for finding circumference of a circle is \[2\pi r\]

Now, if you wouldn't like to explain to our friend emma_beiber how to get the correct answer, be my guest.

If not, I request that you leave me to help, as I was asked.

Answer 11

NO THANK YOU THE LINK DOESN'T WORK EVEN IF ITRIRF TO CLICK ON IT

Answer 12

I WANT TO CLICK ON TI SORRY>:)

Answer 13

NOT TRYING TO BE RUDE BUT

Answer 14

no my answer is right

Answer 15

NO ITS WRONG

Answer 16

sorry>:)

Answer 17

@ellis101

TWO times PI times the RADIUS
DOES NOT equal 2.56.

WHAT is so COMPLICATED about that?!

Answer 18

yes it does

Answer 19

2ellis101 thanky ou for trying to help but your answers areWRONG I HAVE SOME HELP

Answer 20

ok @inyourhead you cna stay but i will clsoe the question so one else comes in k so we can work in peace wihtout pole jsut throwing out answrd>:) sounds good?

Answer 21

okk i closed it

Answer 22

@emma_beiber

Now,
like I said before,
the formula for CIRCUMFERENCE is....

\[2\pi r\]

You'll need a calculator for this one.

Here's a BIG FACT:
The RADIUS equals HALF the DIAMETER.

Since the problem tells us that the DIAMETER is 2.5,
the RADIUS is 1.25.

You follow me so far?

~~~~~~~~~

So, we have to do this....

2 times 3.14 times 1.25

That's our CIRCUMFERENCE.

Answer 23

okk i ahve a calcutalor here

Answer 24

i got 7.88

Answer 25

7.85 sorry

Answer 26

Yes, so the circumference is 7.85 ft. Good work.

Answer 27

k

Answer 28

this simuch beter since the question is closed for some reason everytime u come CRAZY pppl eneter in my SPACE SO WERID

Answer 29

Now,
let me talk a little about what "circumference" is,
just in case.

"Circumference" is the measure AROUND an entire circle.

~~~~~~~~~~

Part B asks us.....

"How many times will the tire have to rotate,
to travel 5,280 feet in all?"


What we have to do is simple,
we DIVIDE....

5,280 by 7.85.

Can you do that?

Answer 30

okk sure

Answer 31

(You can round that answer up, since Part A asked us to round 7.85 up to 8.)

Answer 32

oh ok

Answer 33

Hold on here will you? Something's strange.

Answer 34

umm yewss whatsup

Answer 35

ok and plsu i got 672.6

Answer 36

with some other number sbehind it

Answer 37

Alright.

Sorry, can you do me a favor?

Since Part A asked us to round our answer up to 8,
can you do 5280 divided by 8 instead?

Answer 38

oh yes

Answer 39

When we do that, we get 660.

Is that one of your answers there?

Answer 40

umm n this is a exaplining probkle so whih cmenas there are no answers i have to work it out alonr herea><:)

Answer 41

Ohhh okay.

So let me cover what we've been through so far:


We found the answer to part A -- 7.85.
That's the CIRCUMFERENCE.

And the directions said we need to "round it to the nearest whole number."
So, we need to round 7.85 to 8.

~~~~~~~~~~~~~~~~

Answer 42

ok yes

Answer 43

im there im with u i mean

Answer 44

So when we get to Part B,
it asks us how many times the tire needs to turn,
in order to cover 5,280 feet, in all.

SO.....we need to divide 5,280 by 8.

We get 660.


That means that if the tire turns ONE TIME,
it'll cover 8 feet.

If the tire turns 660 TIMES,
it'll cover 5,280 feet.

Does that make sense?

Answer 45

yesss

Answer 46

Great.

So once again,
Part A --- 8 feet

Part B --- 660 times.

Answer 47

Just to make sure we're on the same page here.

Answer 48

yess lol<>:) and are good in math aren't u

Answer 49

I'm not good at ALL kinds of math,
but I was okay with this geometry stuff.

Answer 50

oh okk

Answer 51

lol i thinkt hat is all for today

Answer 52

thak you for all the help and sorry abour alm those cray people so umm i had close the questiona nd it was easy to work>:)

Answer 53

oh yeah and u got the metal also<>:)

Answer 54

It's okay, don't be sorry for them. They're not your fault.

You're welcome too. Thank you.

Answer 55

okkk byezzz ttyl