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

1. jerwyn_gayo

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

2. jerwyn_gayo

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

3. Chlorophyll

(5.1/2)² *190 * pi/ 360 = 10.8 =

4. Chlorophyll

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

5. jerwyn_gayo

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

6. Chlorophyll

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

7. Flapdragon

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:

8. jerwyn_gayo

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

9. Chlorophyll

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

10. jerwyn_gayo

11. Chlorophyll
12. jerwyn_gayo

@chlorophyll, thanks. .

13. Chlorophyll
14. Chlorophyll

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