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प्रश्न
Look at the shapes given below and state which of these are polyhedra using Euler’s formula.
उत्तर
In the given figure, we have
Faces (F) = 3, Vertices (V) = 0 and Edges (E) = 2
On putting these values in Euler’s formula, we get
F + V – E = 2
⇒ 3 + 0 – 2 = 2
⇒ 1 ≠ 2
Hence, these values do not satisfy the Euler’s formula. So, it is not a polyhedra.
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संबंधित प्रश्न
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| (i) | x | 15 | 20 |
| (ii) | 6 | y | 8 |
| (iii) | 14 | 26 | z |
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Using Euler’s formula, find the value of unknown x in the following table.
| Faces | 7 |
| Vertices | 10 |
| Edges | x |
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| Faces | 9 |
| Vertices | z |
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