Http://ncert.nic.in/ncerts/l/gemp109.pdf
see if it helps if not I am sorry
        
             
        
        
        
14.  x ^2  =  12^2  + 7 ^2  = x = sqrt (12^2 + 7^2) =  sqrt(193)
        
             
        
        
        
Answer:
8/10--> 2/10 20 % scnahce of not makin git
Step-by-step explanation:
 
        
             
        
        
        
Rectangular prism...becuase it is in rectangular shape..no matter how you cut it..it will give u a rectangle