AB = 8 cm, AC = 6 cm, AD = 7 cm, CD = 2.82 and CAB=50°.

Question

 
Calculate to 2 decimal places
 
   (a) the length BC      
 
   (b) The size of angle ABC;    
 
   (c) The size of angle CAD     
 
   (d) The area of triangle ACD