A radio station has a broadcast area in the shape of a circle with the equation x^2+y^2=5,625, where the constant represents square miles.
a) graph the equation then state the radius in miles
b) what is the area of the region in which the broadcast from the station can be picked up?

Question

A radio station has a broadcast area in the shape of a circle with the equation x^2+y^2=5,625, where the constant represents square miles.
a) graph the equation then state the radius in miles
b) what is the area of the region in which the broadcast from the station can be picked up?

bloomlocke367 · Answer

@iGreen

krazykricket · Answer

That question was already asked and answered here is the link if you would like to get help on the question. http://openstudy.com/study#/updates/5146a0f0e4b0e8e8f6bce8ec

bloomlocke367 · Answer

okay

bloomlocke367 · Answer

@KrazyKricket that didn't help....

bloomlocke367 · Answer

@iGreen

igreen · Answer

Note, the end of the equation is r^2, so to find the radius we find the square root of 5625, can you do that? @BloomLocke367

igreen · Answer

That will finish part A, then we can enter the radius into the area of a circle formula.

$A = \pi r^2$

bloomlocke367 · Answer

oh, okay. should I leave it in terms of pi or multiply it out? @iGreen

igreen · Answer

Not sure what they want, just put both of them.

Did you find the radius yet?

igreen · Answer

You most likely have to multiply it out though..

bloomlocke367 · Answer

the radius is 75

bloomlocke367 · Answer

@iGreen

bloomlocke367 · Answer

and the area is 17662.5 mi^2?... @iGreen

bloomlocke367 · Answer

is that correct?

cheesecakekitten · Answer

OMG YOUR PROFILE PIC S SO CUTE! XD

cheesecakekitten · Answer

they look like hetalia mochis

igreen · Answer

Correct! @BloomLocke367

bloomlocke367 · Answer

@CheesecakeKitten I know ^-^ thank you

cheesecakekitten · Answer

^^