What is the surface area of the pyramid shown​

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

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

41/17 as a decimal rounded to the nearest hundredth