Answer:
The volume formula is pi r^2h because it is similar to the formula to the area of a circle with an extra addition of the height variable, since a cylinder is just a circle with depth. The surface area formula is 2pirh +2pi r^2 because it measures the area of both circles as well as the depth. This formula is similar to the circumference formula of a circle.
Step-by-step explanation:
Mark me brainliest pls
 
        
             
        
        
        
The area of the trapezoid is given by the formula A= (a+b)/ 2 * h
in this question a= 8, b= 10, A= 108 inches², and h is what we have to find, substitute what we have got into the formula and you will have:
108= (8+10) /2 *h
108= 9 *h 
h= 108/9
h= 12 inches
 
        
                    
             
        
        
        
Answer:
the circle is a square so that means a triangle is a circle 
Step-by-step explanation:
 
        
             
        
        
        
As many girls and boys plays sports
        
                    
             
        
        
        
Answer:
$43.50 i think
Step-by-step explanation:
30+45%=$43.50