I believe the answer is C
        
                    
             
        
        
        
Answer:
A.) you multiply the 3 and 2 
 
        
                    
             
        
        
        
It would be 60. He sold his painting for 50 which was 10 less that the original price. So 50+10=60
        
                    
             
        
        
        
The correct answer is 18 hope that helped♥
        
             
        
        
        
 The square pyramid looks exactly how it sounds. The base of the shape is a square and has 4 isosceles triangles that meet at a point. The square prism is like a 3D rectangle. It has 4 rectangles and 2 squares to close the shape.
Hope this helped.