SOLUTION: Variations The area of a circle varies directly as the square of the length of its diameter. What is the constant variation? Thank you

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Variations The area of a circle varies directly as the square of the length of its diameter. What is the constant variation? Thank you      Log On


   

Question 41263: Variations
The area of a circle varies directly as the square of the length of its diameter. What is the constant variation?
Thank you
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
area of circle: %28pi%29r%5E2
%28%28pi%29r%5E2%29%2F%28d%5E2%29
%28%28pi%29r%5E2%29%2F%28%282r%29%5E2%29
%28%28pi%29r%5E2%29%2F%284r%5E2%29
%28pi%29%2F4