+0  
 
0
963
1
avatar+4116 

Help.

 Apr 7, 2017
 #1
avatar+129847 
+1

AB =  2 * CB  = 2 * sqrt (28^2 - 9^2)   = 2 * sqrt (784 - 81)  = 2 * sqrt (703) ≈ 53.02 ≈ 53

 

 

cool cool cool

 Apr 7, 2017

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