maths question

Question

find the equation of a circle whose radius is 4, whose centre lies on the line 13x+4y=32, and which touches the line 3x+4y=12.

Answer 1

????????????????? sentree tell lies tu the line ?????????????

yu want a serkel with radius=4

and appareltee the senter is weer 2 strate lines hit

line 1:13x+4y=32

line 2: 3x +4y=12

line -line2...(13x-3x) +(4y-4y)=32-12

10x=20, so x=2

from line2, y=3 -(3/4)x=3-1.5 =+1.5

point=(2,1.5)

Serkel:(x-2)^2 +(y-1.5)^2=16