Can someone help me with this math problem, I will be offering a large amount of points and whoever answers correctly will be marked brainless once 2 people answer on the question! :)

Asphere has a diameter of 10 in. what is the volume of the sphere?

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?