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Q.

How many edges are there in a cuboid?


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a

 Question Image

b

 Question Image

c

 Question Image

d

 Question Image

answer is D.

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Detailed Solution

Concept-  Cuboid is a polyhedron shape which is a three- dimensional shape consist of edge, vertex, and faces. The relation between edge, vertex and faces is known as Euler’s formula i.e., Question ImageseoVertex – Corners of the shape are known as Vertices. There are eight vertices i.e., Question ImageAlso, the faces of the shape are the flat surfaces. Therefore, a cuboid has six faces i.e., Question ImageEdges of the cuboid are the lines which are connecting the faces or the lines which are made by joining two vertices.
Using Euler’s formula,
Question ImageQuestion ImageQuestion ImageHere, the twelve edges are Question ImageHence, the correct answer is option (4) .
 
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