SOLUTION: A circular driveway is bounded by two circles. The equation of the large circle is x^2 + y^2 = 4225, while the smaller circle is x^2 + y^2 = 1444. What is the difference between t

Question 1170405: A circular driveway is bounded by two circles. The equation of the large circle is x^2 + y^2 = 4225, while
the smaller circle is x^2 + y^2 = 1444. What is the difference between the area of the larger circle and the
smaller circle?
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

Since the equation of a circle is x^2+y^2 = r^2, the 4225 and 1444 are the squares of the radii of the two circles.

The area of each circle is pi times radius squared; so the difference in the areas of the two circles is

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