\(In\quad a\quad triangle\quad ABC,\quad it\quad is\quad known\quad that\quad AB=AC\\ .Suppose\quad D\quad is\quad the\quad mid\quad point\quad of\quad AC\quad and\quad \\ BD=BC=2\quad then\quad area\quad of\quad triangle\quad ABC\quad will\quad be\)

Higher level of this problem is here