Mathematics
Joseph is making a pentagonal prism using identical straws. How many straws does he need ?
20
18
15
10
3D in 2D
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Answer
The number of edges in a pentagonal prism is 15, so Joseph needs 15 identical straws.
Hence, option 3 is the correct option.
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Related Questions
If in a polyhedron, number of faces = 20 and number edges = 30; the number of vertices is :
12
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8
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is the net of :
square pyramid
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10
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The number of faces in a triangular pyramid is :
3
4
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none of these