Question

If area of an equilateral triangle is
$49 \sqrt{3}$
cm sq. calculate perimeter of the triangle
​

Answer 1

by the formula of an equilateral triangle=
$\frac{ \sqrt{3} }{4} {side}^{2}$
but according to the questions
$\frac{ \sqrt{3} }{4} {side}^2 = 49 \sqrt{3}$
${side}^{2} = 49 \sqrt{3} \times \frac{4}{ \sqrt{3} } \\ = 49 \times 4 =196$
there fore side =root under 196 = 14
so the parameter = 3× side
=3×14
=42