Friday, October 14, 2011

Sectors of Circles

Yo Yo Yo you already know what time it is. its bout that time rico gatz gets his blog game finished. So check it out we gonna do some real shiznit with sectors of circles.

Formulas: k=1/2r^2($) k= area of sector r= radius $= central angle

k= 1/2 rs

Ex: A sector of a circle has arc length 4 cm and area 40m^2. FInd radius and Central Angle

1)Choose formula to plug in to: k=1/2 rs
2) 40=1/2 r(4)
.5 r=10
r=5
3.)40= .5(5)^2($)
4)$=40/12.5

$=3.2



SO there it is boi, rico gatz signing out for the night after that hard work of blogs i just put in. Time to chil for the night.... Ya Boi #21 out

No comments:

Post a Comment