Step-by-step explanation:
Area = length×breath
=18×11
=198cm²
 
        
                    
             
        
        
        
Answer:
7745.2
Step-by-step explanation:
you need to multiply 67 by 578 which is 38726. then you divide it by 5. In short, you can just use calculator or you can use scratch paper.\
 
        
                    
             
        
        
        
Answer:
look at my explanation
Step-by-step explanation:
Find the area of two sides (Length*Height)*2 sides. Find the area of adjacent sides (Width*Height)*2 sides. Find the area of ends (Length*Width)*2 ends. Add the three areas together to find the surface area
 
        
             
        
        
        
Answer:
x=8
Step-by-step explanation:
3(x-10)=-6
3x-30=-6
3x=24
x=8