Posted by **Thano** on Monday, March 10, 2008 at 8:52am.

Now imagine a circle with a 3-mile radius to be a hypothetical metropolitan area with relatively little undeveloped land inside. If the radius of this hypothetical metropolitan area is extended to 10 miles, how much land is added to the original developed area? (Note: Use 3.1416 as the value of ð in your formula for the area of your circle. There are 640 acres in a square mile.)

## Answer this Question

## Related Questions

- MATH. - Radio station KMA is increasing its radio listening radius from 40 miles...
- Algebra - The Circumference and area of a circle of radius r are givin by 2 [pie...
- math - The area of a circle is given by the formula A = ðr2, where r is the ...
- math - how do i get the area of a circle????????????? area of a circle=pi * ...
- Computer Science (Basics) - public class Circumference { /** * @param args */ ...
- math - A plane is 11.9 miles off the ground as it makes its descent to land at ...
- Algebra - The area of a circle is given by the formula A+pier^2, where r is the ...
- Maths - 1. In the xy-coordinate plane, point A is the midpoint of the segment ...
- 8th grade math - The radius of circle M is 3 times the radius of circle P. If ...
- Math - I am a little confused, can someone please help me? I the radius of a ...