Answer:
somthing els
Step-by-step explanation:
ask him her or hi
 
        
                    
             
        
        
        
Answer: 3000cm3
To find the area you need to find the area of the triangle and multiply that by the height of the prism. 
The area of the triangle is 
.5*12*10 = 60
And the height is .5m = 50cm
So the area will be 
60*50 = 3000
 
        
                    
             
        
        
        
Area of a circle = pir^2
The radius is half the diameter so is 2 metres 
So r^2 is 4
So the answer is 4pi or 12.57 metres squared
Let me know if you have any questions