A cube is a three-dimensional 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.

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Solution

Given, length of one edge of cube = $l$
Number of edges in a cube = 12
$∴$ Total length of edges of the cube $= 12 \times l = 12 l$

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(2) A cuboid has ........ edges.
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A cube is a three-dimensional 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, length of one edge of cube = l Number of edges in a cube = 12 ∴Total length of edges of the cube =12×l=12l

A cube is a three-dimensional 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, length of one edge of cube = $l$
Number of edges in a cube = 12
$∴$ Total length of edges of the cube $= 12 \times l = 12 l$