In the diagram, point B is a point of tangency. Find the radius r of ⨀C.
What is the radius r of ⨀C?
Please show all the work on how you got your answer.
You do not have to explain, all I want is the work.

Some fossils provide evidence to suggest that earth's climate has changed over time. which information can scientists obtain from these fossils? check all that apply

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.

5. what is a red giant? can our sun become a red giant? why or why not?