Question

help pleaseee
What is the equation of the circle with center at (2, 4) and radius of 6?

Answer 1

?

Answer 2

equation of circle with centre as (h,k) and radius r is
(x-h)^2+(y-k)^2=r^2
just put (h,k)=(2,4) and r=6 and simplify you'll get the required equation..

Answer 3

can you do it for me @abhi7

Answer 4

(x-2)^2+(y-4)^2=6^2
use (a-b)^2=a^2-2ab+b^2
so
x^2-4x+4+y^2-8y+16=36
or,x^2+y^2-4x-8y=16
which is the required equation