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A cube is a three-dimensional figure as shown in below 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.
"
Given:
The length of an edge of the cube is given by $l$.
To do:
We have to find the formula for the total length of the edges of the cube.
Solution:
Length of the edge of the cube $= l$
Number of edges of the cube $= 12$
Therefore,
The total length of the edges $=$ Number of edges $\times$ Length of an edge
$=12\times l$
$=12l$
The formula for the total length of the edges of the cube is $12l$.
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