Answer:
Choice D
Step-by-step explanation:
When you convert a unit to a smaller unit it will always get bigger so in this case you will move the decimal point to the right so 21.5 will become 215.
 
        
                    
             
        
        
        
The answer is 11 and 14/33. 
        
             
        
        
        
Not sure, but the areas of a triangle is BH/2 so the dimensions should be 8 and 6 then 10. 
8 x 6 = 48 
48/2 = 24
Maybe that can help with the equation
        
                    
             
        
        
        
Answer:
875 cm^3
Step-by-step explanation:
Here, we want to calculate the volume of the pyramid.
To do this, we need to calculate the area of the base and then multiply this by the height of the pyramid in question 
Mathematically since the base is a square, formula for the base area would be ;
L^2 = 5^2 = 125 cm ^2
Now
using the height to get the volume , we have 125 * 7 = 875 cm^3