Answer:
We know that, a cube is a three-dimensional figure which has six faces and 12 edges. Given, that all edges are equal in length and length of edge\[=l\] Now, total length of the edges of a cube = Sum of all 12 edges of a cube \[=l+l+l+l+l+l+l+l+l+l+l+l\] \[=12l\] Hence, the required formula for the total length of the edges of a cube is \[12l,\]where \[l=\] length of an edge.
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