Work out the length of DB in the diagram below.
Not drawn
to scale
С
5 cm
D
B
4 cm
E
А
18 cm
                                             
                                          
                                          
                                        
											 
											Answer:
10cm
Step-by-step explanation:
CDB and CEA are similar=>CD/CE=DB/EA=>5/9=DB/18=>
9DB=90
DB=10