I have no idea what your talking about haha could you be a little more specific? 
        
                    
             
        
        
        
The answer to number one is A
        
             
        
        
        
We need the background info
        
             
        
        
        
Answer:
C. 10
Step-by-step explanation:
we know that
The height of an isosceles triangle divide the triangle into two equal right triangles.
so
Applying the Pythagorean Theorem at one triangle

solve for x


solve the quadratic equation by graphing
using a graphing tool
The solution is x=5
see the attached figure
therefore
The length of the base is 

 
        
             
        
        
        
Answer:
r = 22.99 cm
Step-by-step explanation:
 sphere surface area = 4πr²
6644.24 = 4 (3.142)r²
6644.24 = 12.568r²
arrange it by change the position to solve it easier
12.568r² = 6644.24
r² = 528.6632718
r = square root 528.6632718
r = 22.99 cm