The answer would be c. If you Take Pi=3.14 and multiply it by the radius=30 then u get 94.2
I think it would take her 1/20 of an hour to do each chore and i dont know what point a is .
Answer: 3sin(45) over sin(40)
Using the law of sins that is given, you can write the following proportion.
3/sin(40) = c/sin(45)
All you have to do to solve for C is to multiply by sin(45). In the proportion, the letter are the side lengths and the trig ratios are of the angle opposite the side.