question_answer

In the figure given below, if PQR is an equilateral triangle and a square ABCD of side AD = 9 cm is inscribed in it, then by how many \[c{{m}^{2}}\] is the area of the triangle more than that of the square?

A)  \[\frac{189\sqrt{3}}{4}\]

B)  \[42\sqrt{3}\]

C)  \[\frac{229\sqrt{3}}{4}\]                       

D)  \[63\sqrt{3}\]

E)  None of these