Linear Charge Density (Question on the problem)

[exitwound]

Homework Statement

A charge of -310e is uniformly distributed along a circular arc of radius 4.15 cm, which subtends an angle of 43°. What is the linear charge density along the arc in C/m?

Homework Equations

Density = Charge/length

The Attempt at a Solution

Charge = -310(1.6E-19) = -4.96E-17 C

Length = ??

This is because I don't know what "subtends an angle of 43" means. Does it mean the circular arc is 43/360 degrees of a circle?

 

[Doc Al]

This is because I don't know what "subtends an angle of 43" means. Does it mean the circular arc is 43/360 degrees of a circle?

Yes, that's exactly what it means.

 

[exitwound]

Okay, thanks!