+0  
 
+1
131
2
avatar+93 

 

WHAT IS THE LENGTH OF CD? 

 

plz look at image

 May 13, 2021
 #1
avatar
+1

 

I was able to visualize this better by rotating BCD so that it is orientated the same as ABC. 

 

Then it becomes clear that 9.6:6 as 6:CD.  

 

                                   9.6          6  

or written differently   ––––  =  ––––  

                                    6           CD  

 

Do they still call it 

cross-multiplication      9.6 • CD  =  6 • 6    

 

                                                         36  

                                             CD  =  ––––  

                                                         9.6  

 

                                              CD  =  3.75  

.

 May 13, 2021
edited by Guest  May 13, 2021
 #2
avatar+2193 
0

Yep, cross-multiplication is what I learnt it as. 

 

=^._.^=

catmg  May 13, 2021

18 Online Users

avatar