Question

in a circle whose radius is 8 the length of the circle is 2 pi in the radians what is the measure of the central angle subtended by the arc?

Answer 1

we are given

radius is 8

`r=8`

length of arc is 2pi

`l=2\pi`

now, we can use formula

`\theta=(l)/(r)`

where

theta is central angle

`\theta=(2\pi)/(8)`

`\theta=(\pi)/(4) radians`...........Answer