What is the perimeter of the figure to the nearest hundredth of an inch?
A.
68.24 inches
B.
43.12 inches
C.
38.56 inches
D.
26 inches

- gabbyalicorn

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- gabbyalicorn

posting pic right now...

- gabbyalicorn

##### 1 Attachment

- triciaal

add the lengths all around the figure

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## More answers

- gabbyalicorn

34

- triciaal

|dw:1433136112597:dw|

- anonymous

what do you think the answer is? @gabbyalicorn

- triciaal

|dw:1433136200589:dw|

- gabbyalicorn

so... -3- i think the first 1 is 25.12 and then the second one is 94.2

- anonymous

to find the circumference of the circle, divide it by two since it is a half circle then add the perimeter of the rectangle like @triciaal is showing you

- triciaal

stop and think the answer to 2 decimal places

- anonymous

if i am right because i am kind of having trouble a little lol

- gabbyalicorn

so 47.1 i divided 94.2 by 2

- gabbyalicorn

its close 2 b

- triciaal

@YoungTrilogyFT3 correct explanation minor adjustment only 3 sides of the rectangle and add the semicircle

- gabbyalicorn

I still dont get it

- gabbyalicorn

@geerky42 @MonKiwi @UsukiDoll

- triciaal

it is very rude to tag other people when you are being helped instead of saying what you need more help with.

- gabbyalicorn

Oh, sorry. :( i did not know it would offend you @triciaal

- gabbyalicorn

but you are right... forgive me

- geerky42

Your goal is to find length of that red line.|dw:1433133208001:dw|

- geerky42

You can do so by "split" line into sommething like this:|dw:1433133292825:dw|

- geerky42

then you only have to calculate perimeter of semicircle then add side length of that rectangle.

- gabbyalicorn

is there a way to check it like for ex (just making this up) 68.24 - 47.1 or something like that?

- geerky42

Not that I know of.

- gabbyalicorn

Okay.

- gabbyalicorn

well the semi-circle is 34

- gabbyalicorn

wait no thats for the rectangle

- geerky42

Well, so what I said, is it clear? can you find total perimeter now?|dw:1433133488047:dw|

- geerky42

First, what is perimeter of semicircle with radius 4?

- gabbyalicorn

8?

- geerky42

How?

- gabbyalicorn

|dw:1433133602296:dw|

- geerky42

I said perimeter of semicircle

- geerky42

|dw:1433133652499:dw|

- gabbyalicorn

|dw:1433133676207:dw|

- geerky42

Do you know how to do that?

- gabbyalicorn

no, im still confused

- geerky42

it's half the circumference

- geerky42

Right?

- geerky42

And you know that \(C = 2\pi r\)
So half circumference would be \(\dfrac{C}{2} = \pi r\)

- geerky42

Here, we have radius of 4, so what's half the circumference?

- gabbyalicorn

12.56

- gabbyalicorn

what i did wad 2 x 3.14 x 4 divided by 2

- geerky42

Yep. |dw:1433133891727:dw|
Now what about rectangle sides?|dw:1433133936113:dw|

- gabbyalicorn

9+8+9= 26 so then im guessing to do \[12.56 \div 26\]

- geerky42

Why divide?

- gabbyalicorn

I have no clue, im just trying to figure out what operation. so if its not division its multipulcation am i right?

- geerky42

You have 2 apples and you have other three apple. To find total apple, you don't do division, right?
You would use addition.

- gabbyalicorn

you're right I just multiplied and the answer was way off.

- gabbyalicorn

38.56

- gabbyalicorn

omg C

- gabbyalicorn

:DDD hazaaa!

- geerky42

|dw:1433134238968:dw|

- gabbyalicorn

Thank you thank you thank you so much! @geerky42 and @triciaal im sorry it took me a while

- geerky42

It's cool, and welcome!

- gabbyalicorn

You never gave up on me :D

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