Brian has a pie that is 10 inches in diameter. He has 9 people over and would like everyone to have an equal piece. How long is the outside edge of each slice of pie ?

Question

anonymous · Answer

attachment

mertsj · Answer

Find the circumference of the pie and divide it by 9

anonymous · Answer

The full circumference is $$
2\pi r
$$

anonymous · Answer

the circumference of the pie is 31.4

mertsj · Answer

Each piece = 
$$\frac{10 \times \pi}{9}$$

anonymous · Answer

is 3.5 ?

mertsj · Answer

Yes.  Good for you.  Now divide that by 9.

anonymous · Answer

0.4 ?"

anonymous · Answer

0.4 is not in my options though

mertsj · Answer

Did you type it in wrong?  Type 31.4 divided by 9 =

mertsj · Answer

I know it has to be more than 3 because 9 goes into 31 3 times and some left over.

anonymous · Answer

it says 3.48888888888888888888888888888

mertsj · Answer

So how did you get 0.4?

anonymous · Answer

I must of did something wrong

mertsj · Answer

So which answer is it?

anonymous · Answer

its not 3 31/63 right ?

anonymous · Answer

I think its that. Don't you think ?

mertsj · Answer

Since they have it in fraction form, you might try using 22/7 for pi.

mertsj · Answer

What are the other choices?  I can't read them.

anonymous · Answer

yeah it says to use 22/7

mertsj · Answer

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