I got 200 from a octagon with the diameter of 10
        
             
        
        
        
Answer:
968
Step-by-step explanation:
Rectangular Prism: 11*11*5 = 605
Square Pyramid: 11*11 * 9 over 3 = 363
363+605= 968
 
        
             
        
        
        
Answer:
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Step-by-step explanation:
 
        
             
        
        
        
The given plane has normal vector

Scaling <em>n</em> by a real number <em>t</em> gives a set of vectors that span an entire line through the origin. Translating this line by adding the vector <2, 1, 1> makes it so that this line passes through the point (2, 1, 1). So this line has equation

This line passes through (2, 1, 1) when <em>t</em> = 0, and the line intersects with the plane when

which corresponds the point (3, -1, 1) (simply plug <em>t</em> = 1 into the coordinates of  ).
).
So the distance between the plane and the point is the distance between the points (2, 1, 1) and (3, -1, 1):
