Q: How much is 3 heptagons and 5 pentagons?

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A heptagon has seven sides and a pentagon has five. So 2 heptagons and 2 pentagons have 2*7 + 2*5 = 14 + 10 = 24 sides altogether.

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

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

All pentagons are 5 sided polygons

Yes providing that they are regular 5 sided pentagons otherwise no if they are irregular pentagons

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75

heptagons have 7 sides pentagons have 5 sides therefore 4 x 7 = 28 4 x 5 = 20 Total 48 sides.

A heptagon has seven sides and a pentagon has five. So 2 heptagons and 2 pentagons have 2*7 + 2*5 = 14 + 10 = 24 sides altogether.

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

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

Not if they are regular 5 sided pentagons

All pentagons are 5 sided polygons

A decagon has 10 sides, a dodecagon 12, and a pentagon 5. So 4 decagons, 5 dodecagons, and 3 pentagons have 4*10 + 5*12 + 3*5 sides = 40 + 60 + 15 = 115 sides altogether.

Yes providing that they are regular 5 sided pentagons otherwise no if they are irregular pentagons

They are plane faces which can have from 3 to 5 sides (triangles, quadrilaterals and pentagons)..

37 sides

Altogether there are: (5*5)+(3*6)+(1*8) = 51 sides