Thursday

April 17, 2014

April 17, 2014

Posted by **megan** on Sunday, May 6, 2007 at 6:37pm.

I thought it was 10 miles.But it says round.So im a little confused.If you could Help.I would be very happy.

the area of a circle is pi * r^2

if the first radius is 40 miles, then the area is pi*1600. the second radius is 50 miles, so the area is pi*2500. 2500(pi)-1600(pi)= 900(pi) additional sq miles of area. and then you multiply 900 and pi to get the answer.

**Related Questions**

precalculus - Gloria is planning to ride her bicycle near the transmitter of a ...

math - The transmitter site of radio station WGGW and the transmitter site of ...

math - A radio station's signal has a radius of 100 miles. If you drive at a ...

10th grade Math - A radio station's signal has a radius of 100 miles. If you ...

algebra - A few more question Id like for someone to check please. 1) what are ...

Math - What is the maximum broadcasting from a radio tower 1800 feet tall( ...

algebra 2 - a research station in antartica is at approximately 75 degreess ...

Algebra2(check) - Would someone please check my answer for me? 1)The equation x2...

geometry - what is the maximum broadcasting radio from a radio tower 1800ft tall...

Math - To chart the movement of a polar bear, scientists attached a radio ...