PLEASE ANSWER ASAP 100 points

The radius of the cone is 3 in and y = 5 in. What is the volume of the cone in terms of pi?

12pi in^3
15pi in^3
8pi in^3
10pi in^3

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0