The radius of front wheel is 21 cm. the arc lenght of the training wheel which is subtended by angle 60° is 6.25 cm. the front wheel of the bike makes 40 complete rotations. find the number of complete rotations made by the training wheel.

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.