SOLUTION: Aaron is calculating the difference (D) between the areas of two circles. If Circle 1 has a radius of R, Circle 2 has a radius of r, and R>r, which of the following equations repre

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Aaron is calculating the difference (D) between the areas of two circles. If Circle 1 has a radius of R, Circle 2 has a radius of r, and R>r, which of the following equations repre      Log On


   



Question 1062063: Aaron is calculating the difference (D) between the areas of two circles. If Circle 1 has a radius of R, Circle 2 has a radius of r, and R>r, which of the following equations represent the difference between the areas?
A. D=pi(R-r)^2
B. D=pi(R^2-r^2)
C. D=pi^2(R-r)
D. D=(piR-pir)^2

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Aaron is calculating the difference (D) between the areas of two circles. If Circle 1 has a radius of R, Circle 2 has a radius of r, and R>r, which of the following equations represent the difference between the areas?
----
Larger area:: pi*R^2
Smaller area: pi*r^2
-----
D = pi[R^2-r^2]
-----------------------
Cheers,
Stan H.
---------
A. D=pi(R-r)^2
B. D=pi(R^2-r^2)
C. D=pi^2(R-r)
D. D=(piR-pir)^2