Question

An equilateral triangle has perimeter 30cm. Find the area of the triangle.

Answer 1

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Answer 2

Heya!!!!
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Here's ur answer...

Perimeter of equilateral triangle = 3a,where a= side of the triangle.
30 = 3a
a =30/3
a=10 cm


Also, area of an equilateral triangle =
$\frac{ \sqrt{3} }{4} {a}^{2 } \\ = \frac{ \sqrt{3} }{4} \times 10 \times 10 \\ = \frac{ 100\sqrt{3} }{4} {m}^{2}$
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________________________@aarohi Malik



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