A triangular pyramid has a slant height of 13 inches. The triangular base has a perimeter of 23 inches and an area of 15 square inches. Find the surface area Please show the work so that I understand

A triangular pyramid has a slant height of 13 inches. The triangular base has a perimeter of 23 inches and an area of 15 square inches. Find the surface area

Please show the work so that I understand it. Also please hurry as I need the answer soon.