My little sister's (sn) birthday is June 5th and I'm going to sing a song with her. The length of this song is 3.17 minutes. and the length of another song is 4.24 minutes. How many seconds long are these two songs in total?​

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min