10
A decagonal prism has 12 faces
i think there is 12 faces are in the decagonal prism this is mhel a decagonal prism has 11 faces
12
20 faces and 10 sides
The two figures that have 10 faces are the decagonal prism and the decagonal bipyramid. A decagonal prism consists of two decagonal bases and 8 rectangular lateral faces, while a decagonal bipyramid has two decagonal bases connected by triangular lateral faces. Both shapes total 10 faces.
A decagonal based pyramid will have 11 faces, 11 vertices and 20 edges
11 faces and 11 corners (vertices).
20
It has 2 bases and 12 faces
A decagonal prism has 12 faces.
Edges = 30 Faces = 12 Vertices = 20
12 faces 20 vertices 30 edges