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 3 years ago
What is the area of a sector with a central angle of 190° and a diameter of 5.1 cm?
 3 years ago
What is the area of a sector with a central angle of 190° and a diameter of 5.1 cm?

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jerwyn_gayo
 3 years ago
Best ResponseYou've already chosen the best response.0i think the given are enough to solve the problem. . do you know the formula?

jerwyn_gayo
 3 years ago
Best ResponseYou've already chosen the best response.0area= r^2(theta) ; where theta is expressed in the radian form. .

Chlorophyll
 3 years ago
Best ResponseYou've already chosen the best response.2(5.1/2)² *190 * pi/ 360 = 10.8 =

Chlorophyll
 3 years ago
Best ResponseYou've already chosen the best response.2My PC so slow that by the time I respond to you, you already gone :P

jerwyn_gayo
 3 years ago
Best ResponseYou've already chosen the best response.0@chlorophyyll. i think it's not pi/360, but, pi/180.

Chlorophyll
 3 years ago
Best ResponseYou've already chosen the best response.2I check the other sources, it says 1/2 of pi/180 > pi/260

Flapdragon
 3 years ago
Best ResponseYou've already chosen the best response.0Oh, okay. That clears it up, thanks. I had my answer written down, but I wasn't sure if I was doing it right. c:

jerwyn_gayo
 3 years ago
Best ResponseYou've already chosen the best response.0in changing degrees to radian it pattern the formula. degree ( pi/180 deg). trigonometry fact.

Chlorophyll
 3 years ago
Best ResponseYou've already chosen the best response.2Don't be confused between arc length and area sector!

jerwyn_gayo
 3 years ago
Best ResponseYou've already chosen the best response.0can you give me a link of your reference?

Chlorophyll
 3 years ago
Best ResponseYou've already chosen the best response.2http://www.worsleyschool.net/science/files/sector/calculations.html

jerwyn_gayo
 3 years ago
Best ResponseYou've already chosen the best response.0@chlorophyll, thanks. .

Chlorophyll
 3 years ago
Best ResponseYou've already chosen the best response.2http://www.wyzant.com/Help/Math/Geometry/Areas/Circles_and_Sectors.aspx

Chlorophyll
 3 years ago
Best ResponseYou've already chosen the best response.2I check multi sources all the times, because I'm confused and very absent minded :(
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