Question

. please answer 3. one please

Answer 1

as we know, area of an equilateral triangle is root3/4*a^2
therefore,
here we are given with,
the area of equilateral triangle,
that is,
root3/4*9
on comparing,
we get, a^2=9
therefore a=3
hence the side of an equilateral triangle is 3cm.
I hope it would help you,if you like it then please mark it as brainiest please

Answer 2

$<h2><font color = red > hey there$


$<font color = black > here we go....$




⊙ We know that the formula of area of an equilateral triangle is :-


$\frac{ \sqrt{3} }{4} \times (side) {}^{2}$



$\frac{ \sqrt{3} }{4} \times (side) {}^{2} = 9cm {}^{2}$



$(side) {}^{2} = \frac{36}{ \sqrt{3} }$



$side \sqrt{ \frac{36}{ \sqrt{3} } }$



side = 4.558 cm


Hope it helps you

Thanks for asking....


@ Prabhudutt