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Q: How many sides does 3 pentagons have?

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37 sides

A pentagon has five sides, and a decagon has ten sides. So 3 pentagons and 5 decagons have (35)+(510) = 65 sides altogether

74 sides

A quadrilateral has four sides and a pentagon has five. So 2 quadrilaterals and 3 pentagons have 2x4 +3x5 sides = 8 + 15 = 23 sides altogether.

They have 49 sides.

There are 11 times 5 = 55 sides in 11 pentagons.

1 pentagon = 5 sides. 55 pentagons = 5*55 = 275 sides.

A pentagon has five sides, and a quadrilateral has four sides. So five pentagons and three quadrilaterals have 5*5 + 3*4 sides = 25 + 12 sides = 37 sides.

A pentagon has 5 sides. If you have 4 pentagons, you use: 4x5=20. Therefore, 4 seperate pentagons have 20 sides. This is not true if you have them combined however.

500

20 :)

There are: (5*6)+(3*5)+(5*3) = 60 sides

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