Both of the prisms and cylinders have their base and top as congruent faces and parallel to each other. Also, a prism becomes a cylinder as the number of sides of its base becomes larger and larger.
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23.How are pyramids and cones alike?
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24.Is a square prism same as a cube? Explain.
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25.Verify Euler’s formula for these solids.
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Long Answer Type
26.Using Euler’s formula find the unknown.
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Short Answer Type
27.Can polyhedron have 10 faces, 20 edges and 15 vertices?
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Fill In the Blanks
28.According to the Euler’s formula, we have F + V – E = ___________.
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29.A cuboid has _______ faces, _______ edges and _______ vertices.
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Short Answer Type
30.A polyhedron has 30 edges and 12 vertices. How many faces does it have?