question_answer

A spherical balloon of radius 3cm subtends an angle of \[60{}^\circ \] at the eye of the observer. If the angle of elevation of its centre is \[45{}^\circ \], then the height of the centre of the balloon is __

A)  6\[\sqrt{2}\] cm                                                

B)  3\[\sqrt{2}\] cm    

C)  9cm                                                                

D) 3cm

E) None of these