Question

What is the length of XPY in terms of pi?

27pi m
18pi m
9pi m
3pi m

Answer 1

Please show work

Answer 2

Since circumference is just 2pi times the radius, just find the circumference first. Then subtract out the amount that's leftover.

Answer 3

how do i find circumference?

Answer 4

@Kainui

Answer 5

The ratio of a circle's circumference to its diameter is what pi is. In an equation form, it's the same as saying this. \[\frac{C}{d}=\pi\]

You're given a radius, which is just half the diameter, and you want to find the circumference. So do a little algebra rearranging... \[C= \pi d\] since d=2r we get \[C= 2 \pi r\]

Answer 6

let : s=length of arc, r=radius, theta=angle in radians

therefore the formula goes as : s=r*theta
therefore \[s=6*(3 pi/2)=28.26m\]

Answer 7

what? @tanmaykhandait

Answer 8

that is not one of my choices though

Answer 9

according to you choices...its 6pi

Answer 10

37.6? @Kainui

Answer 11

sorry 9pi...option C

Answer 12

I don't have a 6pi

Answer 13

oh

Answer 14

Thank you so much @tanmaykhandait