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Answer:
-3, 2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
c
Step-by-step explana i think its right
 
        
             
        
        
        
To find the surface area of the figure , we need to add the surface area of all the faces
So the surface area of figure = Area of two lateral rectangular faces + Area of two triangular faces + area of base
hence 
Surface Area of figure = 2(10*15) + 2( 1/2 * 8 * 12) + (12*15) 
= 300 + 96 + 180
= 576 square feet
So correct option is the last one