The length of an edge of a cube is $l$ . Find the formula for the sum of lengths of all the edges of the cube.

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Solution

Given, the length of the edge of a cube $= l$
Total number of edges of a cube $= 12$
In a cube length of all the edges is same
So, sum of lengths of all the edges of a cube $= 12 \times l = 12 l$

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The length of an edge of a cube is l. Find the formula for the sum of lengths of all the edges of the cube.

Given, the length of the edge of a cube =lTotal number of edges of a cube =12In a cube length of all the edges is sameSo, sum of lengths of all the edges of a cube =12×l=12l

The length of an edge of a cube is $l$ . Find the formula for the sum of lengths of all the edges of the cube.

Given, the length of the edge of a cube $= l$
Total number of edges of a cube $= 12$
In a cube length of all the edges is same
So, sum of lengths of all the edges of a cube $= 12 \times l = 12 l$