A cube is
a three-dimensional figure as shown in the given figure. It has six
faces and all of them are identical squares. The length of an edge of
the cube is given by *l*. Find the formula for the total length
of the edges of a cube.

Length of
edge = *l*

Number of edges = 12

Total length of the edges = Number of edges × Length of one edge

= 12*l*

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