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Math Help - Urgent Geometry assistance?

  1. #1
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    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.
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  2. #2
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    Quote Originally Posted by swedishskinjer View Post
    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. ?
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