Question

2. Find the area of an equilateral triangle with side 10 cm.
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Answer 1

Formula to find area of equilateral triangle is -

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

Here , length (a) = 10 cm

Area of equilateral triangle =

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

$- > \frac{ \sqrt{3} }{4} {10}^{2}$

$- > 25 \sqrt{3} \: {cm}^{2}$