# Math Help - Urgent Geometry assistance?

1. ## Urgent Geometry assistance?

1. A circle graph has a section marked "Potatoes: 28%." What is the measure of the central angle of this section?

2) http://img9.imageshack.us/img9/5614/...aaaaaaazh4.png

Find the measure of arc YW.
Find the measure of arc WXS.

2. Originally Posted by swedishskinjer
This is for my Geometry.

1. A circle graph has a section marked "Potatoes: 28%." What is the measure of the central angle of this section?

28% of 360 degrees

2) http://img9.imageshack.us/img9/5614/...aaaaaaazh4.png

Find the measure of arc YW.
Find the measure of arc WXS.

arc length, $s = r\theta$ , where $\theta$ = central angle in radians

arc YW = $30^{\circ} = \frac{\pi}{6} \, rad$

$s = 27 \cdot \frac{\pi}{6} = \frac{9\pi}{2} \approx 14.1 \, in.$

you find the measure of arc WXS
o.k. ?