Here's the question you clicked on:
Flapdragon
What is the area of a sector with a central angle of 190° and a diameter of 5.1 cm?
i think the given are enough to solve the problem. . do you know the formula?
area= r^2(theta) ; where theta is expressed in the radian form. .
(5.1/2)² *190 * pi/ 360 = 10.8 =
My PC so slow that by the time I respond to you, you already gone :P
@chlorophyyll. i think it's not pi/360, but, pi/180.
I check the other sources, it says 1/2 of pi/180 --> pi/260
Oh, okay. That clears it up, thanks. I had my answer written down, but I wasn't sure if I was doing it right. c:
in changing degrees to radian it pattern the formula. degree ( pi/180 deg). trigonometry fact.
Don't be confused between arc length and area sector!
can you give me a link of your reference?
http://www.worsleyschool.net/science/files/sector/calculations.html
@chlorophyll, thanks. .
http://www.wyzant.com/Help/Math/Geometry/Areas/Circles_and_Sectors.aspx
I check multi sources all the times, because I'm confused and very absent minded :(