Q: How many sides do 2 nonagons and 2 decagons have in all?

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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.

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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.

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".

all decagons have 1440 degrees