Dear Aryan
since triangle is an equilateral triangle.
we can find perpendicular height of the triangle.
height = (2 –1 – 2)/
2
height = 1/
2
but in an equilateral triangle height =
3 * a/ 2 (where a is the side)
hence
3 * a/ 2 = 1/
2
a =
(2/3)
hence area = a
2 * (1/4)
3
= (2/3) * (1/4) *
3
=
1/23
Regards
Arun (askIITians forum expert)
