n preparation for Thanksgiving Day, the Save-You-More Store has stacked cans of cherry pie filling in a triangular pyramid. The top of the pyramid has a single can, the second row has three cans, and the third row has six cans. The third row of the pyramid is shown on the right. If the store has 810 cans of cherry pie filling and wishes to build the three largest triangular pyramids of equal height it can, how many rows will the pyramids have and how many cans will be left over? The pyramids will have (Type whole numbers.) rows each and there will be cans left over.