R is tangent to circle P at point Q.

What is the approximate length of RP? Round to the nearest tenth.
5.6 units
6.1 units
8.3 units
9.8 units

Which of the layers of the earth has the following three characteristics? i. it is a solid outer layer. ii. it is between 3 and 30 miles thick. iii. it is separated into plates. a. the outer core b. the inner core c. the mantle d. the crust

Most of the earthquakes in japan are a result of one plate sinking over one another

What are two ways besides voting that citizens may participate in government?