Question

can I find an arc length in terms of Pi once i already have the sector area and my work?

Answer 1

if not, how do I find arc length?

Answer 2

https://drive.google.com/file/d/0B9WEnwUXTQ1dQm9vVHN4V3BYdjQ/view?usp=sharing

Answer 3

What are you asking Batman? :o

Answer 4

I'm saying I don't know how to find the length of XPY, I instead just managed to find the area of the sector, and i'm wondering how i would find the length. area=14.14 In terms of pi it is 4.5.

Answer 5

Circumference of the circle is \(\Large\rm C=2\pi r\).
But we only want to go 3/4 of the way around the circle.
So, \(\Large\rm \frac{3}{4}C=\frac{3}{4}\cdot 2\pi r\)

Answer 6

http://openstudy.com/study#/updates/4fa7cfe3e4b029e9dc38982d

Answer 7

Don't think of area, think of circumference, distance around.

Answer 8

ok

Answer 9

12pi

Answer 10

that is the circumference, right?

Answer 11

Mmm yes good.
That's the total distance AROUND the circle.
To find our arc length, we only want to go 3/4 of the distance around, yes?

Answer 12

Notice that the small sector is a 90 degree angle.
That accounts for 1/4 of the total pie.

Answer 13

0h. the answer is 9 pi. thank you good sir.

Answer 14

yay good job \c:/