Question

how do you find the area of a circle while its in a graph?

Answer 1

determine a radius based off of the graph and use an area formula

Answer 2

how do i find the radius of a graph?

Answer 3

can you post a picture? if not count the points that are in the circle from the middle to one end of the circle

Answer 4

http://www.google.com/imgres?imgurl=http%3A%2F%2Fwww.regentsprep.org%2FRegents%2Fmath%2Falgtrig%2FATC1%2Fcirclegraph4.gif&imgrefurl=http%3A%2F%2Fwww.regentsprep.org%2FRegents%2Fmath%2Falgtrig%2FATC1%2Fcirclepractice.htm&h=300&w=300&tbnid=_79RQw5iWaL4PM%3A&zoom=1&docid=JzOtzJlPrR6_rM&ei=4GM4U4WfMeewyQG21YHYCg&tbm=isch&ved=0CPEBEIQcMDE&iact=rc&dur=354&page=3&start=46&ndsp=26

Answer 5

something like that...

Answer 6

In that case the radius is 3

Answer 7

oh. the end points of my gircle are 2,2,-2,-2

Answer 8

A=pir^2 so assuming that the middle is at the origin the area would be 12.5664 cm