J jinx24 New member Joined Jan 23, 2006 Messages 45 Mar 10, 2006 #1 The problem I am working on asks to find the area and perimeter of the given sector. A = (1/2)r^2(theta) I don't know what the formula is for the perimeter, and I can't find it anywhere. Thanks for your help!
The problem I am working on asks to find the area and perimeter of the given sector. A = (1/2)r^2(theta) I don't know what the formula is for the perimeter, and I can't find it anywhere. Thanks for your help!
S soroban Elite Member Joined Jan 28, 2005 Messages 5,584 Mar 10, 2006 #2 Hello, Jinx! The problem I am working on asks to find the area and perimeter of the given sector. \(\displaystyle \text{Area}\:=\:\frac{1}{2}r^2\theta\) I don't know what the formula is for the perimeter. Click to expand... We are expected to figure it out . . . Code: * / * r/ *s / θ *----------* r We know that: \(\displaystyle s \:=\: r\theta\) . . . right? Therefore: \(\displaystyle \,\text{Perimeter} \:= \:2r\,+\,r\theta\)
Hello, Jinx! The problem I am working on asks to find the area and perimeter of the given sector. \(\displaystyle \text{Area}\:=\:\frac{1}{2}r^2\theta\) I don't know what the formula is for the perimeter. Click to expand... We are expected to figure it out . . . Code: * / * r/ *s / θ *----------* r We know that: \(\displaystyle s \:=\: r\theta\) . . . right? Therefore: \(\displaystyle \,\text{Perimeter} \:= \:2r\,+\,r\theta\)
