Question

given a circle with center at (10,9) and a radius of 3 what is the equation of a circle

Answer 1

Answer:

solution given that

(h k)=(10 9)

r=3

then we know that

equatiin of circle with radius 3 unit and centre at (10 9)is

(x-h)^2+(y-k)^2=r^2

(x-10)^2+(y-9)^2=3^2

x^2-2×x×10+10^2+y^2-2×y×9+9^2=9

x^2-20x+100+y^2-18y+81=9

x^2+y^2-20x-18y+180=0ans