They have 49 sides.
There are (2*5) plus (5*10) = 60 sides
all decagons have 1440 degrees
If the prism is based on regular decagons and it is a right prism, all 12 faces.
It all depends on what kind of polygon it is. It may have no congruent sides or all congruent sides.
Each decagon has 10 sides, each nonagon has 9 sides and each pentagon has 5 sides. 4 decagons make 40 sides, 2 nonagons make 18 sides and 2 pentagons make 10 sides. When you add them all up together, you get 68 sides in total.
A decagon has ten sides, a hexagon has 6, a nonagon has nine, and a triangle has three. So 2 decagons, 1 hexagon, 4 nonagons, and 2 triangles have 2*10 + 1*6 + 4*9 + 2*3 = 20 + 6 + 36 + 6 = 68 sides altogether.
A hexagon has six sides, and a nonagon has nine. Three hexagons and three nonagons then have (3 x 6) + (3 x 9) = 18 + 27 = 45 sides altogether.
There are 74 sides in all.
60
They have 49 sides.
There's 5 triangles but till 3 sides in each, in Hectagon is 8 sides and the 3 Decagons are still 10 sides on it.
There are (2*5) plus (5*10) = 60 sides
It still has ten sides, same as a normal decagon. "Irregular" simply means that all the sides and angles of the decagon are not congruent.
A decagon has 10 sides, and a hexagon has 6 sides. To figure out the total number of sides for 5 decagons and 5 hexagons:Number of Sides = 5(10) + 5(6)Number of Sides = 50 + 30Number of Sides = 80
There are 12 sides in a dodecagon, 5 in a pentagon, and 10 in a decagon. So in 4 dodecagons, 3 pentagons, and 2 decagons there are 4*12 + 3*5 + 2*10 = 48 + 15 + 20 = 83 sides altogether.
All nine sided polygons are known as "nonagons". Nonagons that have all side lengths the same are known as "regular nonagons".