Question

The length of each side of an equilateral triangle is
increased by 4 m there we area of the triangle is
increased by
$40 \sqrt{3}$
the perimeter of
the original triangle​

Answer 1

Answer:

the area of an equilateral triangle is 4√3cm2 Its perimeter is. Solution : √34a2=4√3⇒a2=16⇒a=4. ∴ perimeter =3a=(3×4)cm=12.