Question

find ⅓ of the perimeter of an equilateral triangle of of side 4 cm.


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Answer 1

Answer:

21.33 cm

Step-by-step explanation:

Perimeter = a^3

                 =4 X 4 X 4

                 =64

Perimeter = 1/3 X 64

                 = 64/3

                 = 21.33 cm

Answer 2

Solution:

Given:

$\tt\longrightarrow Side\:of\:equilateral\:triangle=4\:cm$

We know that the perimeter of an equilateral triangle is given by:

$\tt\longrightarrow Perimeter=3\times Side$

Therefore:

$\tt\longrightarrow Perimeter=3\times 4\:cm$

$\tt\longrightarrow Perimeter=12\:cm$

Now, one-third of the perimeter will be:

$\tt=\dfrac{1}{3}\times12\:cm$

$\tt=4\:cm$

Which is our required answer.

Answer:

• One-third the perimeter of an equilateral triangle with side 4 cm is 4 cm.

Learn More:

Area formulae.

$\tt1.\:\:Square=Side^2$

$\tt2.\:\:Rectangle=Length\times Breadth$

$\tt3.\:\:Triangle=\dfrac{1}{2}\times Base\times Height$

$\tt4.\:\:Rhombus=\dfrac{1}{2}\times Product\:of\:diagonals$

$\tt5.\:\:Parallelogram=Base\times Height$

$\tt6.\:\:Trapezium=\dfrac{1}{2}\times Height\times (Sum\:of\:parallel\:sides)$