question_answer

In the shown figure, if PQR is an equilateral triangle and square ABCD is inscribed in it whose side is 6 cm, then by how many \[\mathbf{c}{{\mathbf{m}}^{\mathbf{2}}}\] is the area of triangle more than that of the square?

A)  18\[\sqrt{3}\]                                       

B)                     21          

C)  21\[\sqrt{3}\]               

D)                                            18

E) None of these