in the xy - plane the point ( - 2 - 3 ) is the centre of a circle , the point ( - 2 , 1 ) lies inside the circle and the point ( 4 , - 3 ) lies outside the circle . if the radius r of the circle r is an integer then diameter ?
"can be solved without much calculations . you are given that ( - 2 , - 3 ) is the center of the circle . point ( 4 , - 3 ) lies inside the circle - - - > the radius is lesser than distance of ( - 2 , - 3 ) from ( 4 , - 3 ) - - - > lesser than 6 units but the radius will also be greater than the distance of ( - 2 , - 3 ) from ( - 2,1 ) - - - - > greater than 4 units . thus the radius is > 4 but < 6 and as it is an integer , the only possible value of radius = 5 units . diameter = 2 r = 10 b is the correct answer ."
divide(add(subtract(4, negate(2)), 4), 2)