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How many sides do 3 decagons, 2 pentagons, 4 quadrilaterals, and 5 triangles have in all?

sides


Sagot :

Answer:

71 sides

Step-by-step explanation:

3 decagons = 3 × 10 = 30 sides since 1 decagon has 10 sides.

2 pentagons = 2 × 5 = 10 sides since 1 Pentagon has 5 sides.

4 quadrilaterals = 4 × 4 = 16 sides since 1 Quadrilateral has 4 sides.

5 triangles = 5 × 3 = 15 sides since 1 triangle has 3 sides

Therefore, in all they have:

= 30 + 10 + 16 + 15

= 71 sides