Question

Please really need the correct answer for this or I'll fail algebra 3

Answer 1

`4\pi`

Explanation:

S = Arc Lenth

θ = Radians

R = Radius

S = θR

So, now that we understand the formula, we will convert 72° into radians by introducing the equation
`x*(\pi )/(180)`, x = 72

S =
`72*(\pi )/(180) * R`

given that R = 10

S =
`(72*10*\pi )/(180)`

S =
`(720*\pi )/(180)`

We simplify 720 as 180 goes into 720 4 times and we get

S =
`4\pi`

Hope this helps