Area and Perimeter of Slice of Pie

I have a class assignment to figure both the perimeter and area of a Circle, rectangle and a slice of pie based on user input. I have the circle and the rectangle working correctly, however I am having trouble with the slice of pie. I have to prompt the user for the degrees of the slice of pie and the radius of the slice of pie and some how figure out the perimeter and area. Thanks in advance for any help!

one thing to not bout this before a bunch of formula go flying around:
sometime people foolishly think that there are 360 degrees in a circle, but they are wrong there is really 2*PI radians :)
For a Sector of a Circle of Radius 'r'
Area = 0.5 * r * r * a - a is the angle in radians
Arc Length = r * a
Perimiter = Arc Length + 2 * r
here is the trick if you are told that the angle is 10% of a circle then
a = 2 * Math.PI() * (10/100)
if you are told it is 45 degrees
a = 45 / 360 * 2 * Math.PI()
that should help a bit

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Please check the doc: http://help.adobe.com/en_US/acrobat/X/pro/using/WS8244FB06-C3F6-40cd-9D95-261B9DAF0070.htm l#WSC59DB518-BBCA-4d96-8606-7FC19DDC0D38
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Hi gentleman,
I tried to measure area and perimeter at the same time but couldnt find a way to do that. I need to cover an area and to see area and perimeter at the same time and drawing two seperate measure lines -one for area the other for perimeter, is gonna be quite time consuming for me. Is there a way to see area and perimeter at one shot? I am using Adobe Acrobat 8 Professional.
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Message was edited by: ygul

one thing to not bout this before a bunch of formula go flying around:
sometime people foolishly think that there are 360 degrees in a circle, but they are wrong there is really 2*PI radians :)
For a Sector of a Circle of Radius 'r'
Area = 0.5 * r * r * a - a is the angle in radians
Arc Length = r * a
Perimiter = Arc Length + 2 * r
here is the trick if you are told that the angle is 10% of a circle then
a = 2 * Math.PI() * (10/100)
if you are told it is 45 degrees
a = 45 / 360 * 2 * Math.PI()
that should help a bit

Active Area and Slices in a button

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Also about setting it. Is it set all by itself when we create a button or we have to open Active Area item of a drop down menu in symbol properties window?

An Active Area is the area of a metallic rectifier that acts as the rectifying junction and conducts current in the forward direction. Just kidding. :-) It's the area of a web page that responds to the viewer's cursor, generated automatically when you create a button and add states to it. You can do that via the properties panel, by double clicking on the button symbol to activate Fireworks symbol editing mode.

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Hi
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http://help.sap.com/saphelp_46c/helpdata/en/5d/a77d80ec1111d2bc1000105a5e5b3c/content.htm
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Screen shot is as follows:-
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Amit

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Thank you Charlie,
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Follow us on Twitter www.twitter.com/vzwsupport

Area and Perimeter of Slice of Pie

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