Question

if the side of a equatorial triangle is 19 cm. then its area is?​

Answer 1

$hi \: ...$

Side = 19cm .

We know that ,

Area of an equilateral triangle

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

$= \frac{ \sqrt{3} }{4} \times {19}^{2}$

$= \frac{ \sqrt{3} }{4} \times 361$

$= \sqrt{3} \times 90.25$

$= 156.31 {cm}^{2}$

hope this helps you