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

Question

anonymous · Answer

i think the given are enough to solve the problem. .

do you know the formula?

anonymous · Answer

area= r^2(theta) ; where theta is expressed in the radian form. .

anonymous · Answer

(5.1/2)² *190 * pi/ 360 = 10.8
=

anonymous · Answer

My PC so slow that by the time I respond to you, you already gone :P

anonymous · Answer

@chlorophyyll. i think it's not pi/360, but, pi/180.

anonymous · Answer

I check the other sources, it says 1/2 of pi/180  --> pi/260

anonymous · Answer

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:

anonymous · Answer

in changing degrees to radian it pattern the formula.

degree ( pi/180 deg). trigonometry fact.

anonymous · Answer

Don't be confused between arc length and area sector!

anonymous · Answer

can you give me a link of your reference?

anonymous · Answer

anonymous · Answer

@chlorophyll, thanks. .

anonymous · Answer

anonymous · Answer

I check multi sources all the times, because I'm confused and very absent minded :(