!PLEASE HELP ITS 10 POINTS! A dart board has a diameter of 16 cm. The bulls eye is .4 cm. I throw a dart at the dart board. Given i hit the dart board what is the probability that I get a bulls eye? Formula for area of a circle is pi r^2.

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

This is about circle theorems. someone asap : (