Question

How do you find the arc length? Explain the two methods learned in this section.

Answer 1

@jim_thompson5910

Answer 2

of a circle? or in general?

Answer 3

Circle

Answer 4

do you know how to find the circumference of a circle?

Answer 5

P=2π R ?

Answer 6

now what is the angle that cuts off the arc?

Answer 7

You lost me... ):

Answer 8

do you have any information about the radius of the circle?

do you know the central angle?

Answer 9

It just asks me this questions. Nothing more.

Answer 10

ok then you would use this formula


\[\large s = \frac{t}{360}*2*\pi*r\]

where

s = arc length
t = central angle
r = radius

Answer 11

if you know the angle t and the radius r, then you can find the arc length s.

Answer 12

But it asks me to explain both methods. Isn't that just one?

Answer 13

I'm not sure what another method is

Answer 14

so you'll have to look back in your book for that other method

Answer 15

Okay thankyou

Answer 16

you're welcome