Question

What will be the area of a equilateral triangle which has all side 6cm?

Answer 1

Answer:

A≈15.59cm²

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Answer 2

As we know that :

Area if equilateral triangle

$\frac{ \sqrt{3} }{4} {a}^{2}$

where, a is the length of the side of equilateral triangle.

Now, according to the question :

Area of equilateral triangle :

$\frac{ \sqrt{3} }{4} \times {6}^{2} \\ \\ = > \frac{ \sqrt{3} \times 6 \times 6 }{4} \\ \\ = > 9 \sqrt{3} \\ \\ = > 9 \times 1.732 = 15.588$

So, the area of equilateral triangle will be 15.59 cm² (approx)

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