Each band members is selling wrapping paper to help raise money for the band banquet the band pay $2.75 for each roll of wrapping paper the rolls are then sold for $5.00 each

The radius of the base of a cylinder is 10 centimeters, and its height is 20 centimeters. a cone is used to fill the cylinder with water. the radius of the cone's base is 5 centimeters, and its height is 10 centimeters.

Pls! does anybody know a shortcut for answering these types of questions in the future?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.