Get detailed and reliable answers to your questions on IDNLearn.com. Discover detailed and accurate answers to your questions from our knowledgeable and dedicated community members.

An arc of a circle has a central angle of 120 degrees . If the length of the arc is 5pi inches , what is the radius , , of the circle ?

Sagot :

In this case, we'll have to carry out several steps to find the solution.

Step 01:

data:

central angle = 120°

length of the arc = 5π in

Step 02:

arcs and circles:

radius:

[tex]\begin{gathered} arc\text{ length = }\frac{\theta}{360\degree}\text{ * 2}\pi\text{ r } \\ \\ 5\pi\text{ in = }\frac{120\degree}{360\degree}*\text{ 2}\pi r \end{gathered}[/tex][tex]\frac{360\degree\text{ * 5}\pi}{120\degree *2\pi}\text{= r}[/tex]

r = 7.5 in

The answer is:

r = 7.5 in