Question

Find the radius of a circle whose arc length is 55 m and its central angle measure if 5radians.

Answer 1

The arc length of a circle is given by the following equation:

`L=\theta R`

where theta is the central angle and r is the radius of the circle. Then, replacing the given data into the previous equation, we get:

`55=5R`

solving for R, we get:

`R\text{ = }(55)/(5)=\text{ 11}`

then, the correct answer is:

`R\text{ = 11}`