Question

of an edge of the cube is given by L Find the formula for
EXERCISE 11
1. The side of an equilateral triangle is shown by L. Express the
perimeter of the equilateral triangle using I
2. The side of a regular hexagon (Fig 11.10) is denoted by L
Express the perimeter of the hexagon using L
(Hint: A regular hexagon has all its six sides equal in length.)
3. A cube is a three-dimensional figure as
shown in Fig 11.11. It has six faces and all
of them are identical squares. The length
1
Fig ILI
total length of the edges of a cube.
Fig 11.11​

Answer 1

Answer:

1.Perimeter=3L

2. Perimeter =6L

Explanation:

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Answer 2

Answer:

given that

side of the equilateral triangle=l

In equilateral triangle all sides are equal

∴ side 1=side 2=side 3.

So, perimeter=l+l+l

=3l