Find the area of the surface obtained by rotating one arch of the cycloid x = 0 - sine, y=1-cos 0 about x-axis.

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)