If the measurement of a central angle is 5 pie /6 , find the length of its intercepted arc in a circle with a radius of 15 inches.

Can somebody me out with this question

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39