Example.—To find the shot in a triangular pile, the bottom row consisting of 12 shot.

Parallel{12
edges.{ 112 ÷ 2= 6
{ 112 + 1= 13
Triangular face 78
3 )144⅔
4⅔312
52
Answer 364

Example.—To find the shot in a square pile, the bottom row consisting of 12 shot.

12
112 ÷ 2= 6
112 + 1= 13
78
3 )258⅓
8⅓624
26
Answer 650

Example.—To find the shot in an oblong pile, whose base consists of 18 shot in length, and 12 in breadth.

1818 - 12= 6
181
77
3 )43
14⅓12 ÷ 2= 6
12 + 1= 13
78
14⅓
312
78
26
Answer 1118