This paper first appeared in the Novi Commentarii academiae scientiarum Petropolitanae vol. 1, 1750, pp. 3-19 and is reprinted in the Opera Omnia: Series 1, Volume 27, pp. 181–199. Its Eneström number is E133. This translation and the Latin original are available from the Euler Archive.
Curtin, Daniel J.
"On the Surface Area of Scalene Cones and Other Conical Bodies,"
Euleriana: 1(1), pp.42-61.
Available at: https://scholarlycommons.pacific.edu/euleriana/vol1/iss1/4