Posted by **Izzy** on Saturday, May 4, 2013 at 7:52pm.

Find the arc legnth of Arc AB. Leave your answer in terms of pi.

arc is 45 degrees radius is 5

- geomerty -
**Damon**, Saturday, May 4, 2013 at 8:03pm
45/360 = .125

or 1/8 of the circumference

circumference = 2 pi r = 2 pi (5) = 10 pi

so 10 pi/8 = (5/4) pi = 1.25 pi

- geomerty -
**Izzy**, Saturday, May 4, 2013 at 8:08pm
the answers I have to pick from are

6 pie 8 units

3 pi 4 units

9 pi 4 units

9 pi 8 units

so is 9 pi 8 units the answer

- geomerty -
**Damon**, Saturday, May 4, 2013 at 8:13pm
Well I get 10 pi/8 which is 5 pi/4

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