Find the equation of the circle with given center and radius r.
(1, - 7); r = 1
thanks so much!
2007-09-11 16:23:35 · 6 answers · asked by Angelica 1 in Education & Reference ➔ Homework Help
(x+1)² - (y-7)² = 1
2007-09-11 16:33:34 · answer #1 · answered by Anonymous · 1⤊ 1⤋
equation of circle: (x-h)^2 + (y-k)^2 = r^2
the center is (h,k), radius r
(x-1)^2 + (y+7)^2 = 1
2007-09-11 16:32:57 · answer #2 · answered by Sean 2 · 1⤊ 1⤋
ohh my!! ill answer it.. heheh!! ok lets start!! then give me more star ha? hehe!!
(x - h)2 + (y - k)2 = r2 this is the equation!! and subtitute it...well.....
given.=( h,k) = 1, -7 and radius.....r=1...
then!!! (x - 1)2 + (y - (-7))2 = r1
(x -1) 2 + ( y+7)2= 1(2)<(squared the 2)
answer!!!!>>>>> (x -1)2 + ( y +7 )2 = 1<<< this is the equation!! hell yeah!!! lol
2007-09-11 16:53:59 · answer #3 · answered by Japeth P 1 · 0⤊ 1⤋
There is no such thing as the equation of a circle. There are several circle equations at this web site.
2007-09-11 16:33:51 · answer #4 · answered by Steve B 6 · 0⤊ 3⤋
Do you mean circumfrence and Area?
C=2(pi)r
A=(pi)r-squared
C=2(3.14)(1)=6.28
A=(3.14)(1)(1)=3.14
2007-09-11 16:39:21 · answer #5 · answered by BEF 2 · 0⤊ 1⤋
Sorry, my pie is not square.
2007-09-11 16:35:57 · answer #6 · answered by bahbdorje 6 · 0⤊ 1⤋