andrew runs around a circular track each morning, the diameter of the track is approximately 1/4 mile. approximately how far does andrew run if he completes 11 laps around the track

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18