pls help me answer this i dont have a lot of time here1

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom