Question

If the perimeter of an equalateral tringle is 46cm,then the length of each side is?

Answer 1

Answer:

We know that Perimeter of equilateral triangle is 3a

So,

46 = 3a

a = 15.3

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Answer 2

Answer:

The length of each side is 15.3 cm

Step-by-step explanation:

Perimeter of all triangles = a + b + c

Perimeter of equilateral triangle = 3 × S

(Because in a equilateral triangle all the sides are equal.

For Example:

The sides of equilateral triangle are 4 cm, 4 cm, 4 cm.

Perimeter of all triangles = a + b + c = 4 + 4 + 4 = 12 cm

Perimeter of equilateral triangle = 3 × S = 3 × 4 = 12 cm

Both are same.)

Perimeter of an equilateral triangle = 46 cm

Perimeter of equilateral triangle = 3 × S

3 × S = 46

S = 46/3

S = 15.3 cm

The length of each side is 15.3 cm

Check ⇒

Perimeter of equilateral triangle = 3 × S

S = 15.3 cm

Perimeter of equilateral triangle = 3 × S

                                                      = 3 × 15.3

                                                      = 45.9 cm = 46 cm

Hence, the answer is correct.

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