SOLUTION: how to draw the diameter of a circle for (-3, 1/4 ) and (12/5 , 2/3 ) so that i can find out the radius

Algebra ->  Trigonometry-basics -> SOLUTION: how to draw the diameter of a circle for (-3, 1/4 ) and (12/5 , 2/3 ) so that i can find out the radius       Log On


   

Question 948424: how to draw the diameter of a circle for (-3, 1/4 ) and (12/5 , 2/3 ) so that i can find out the radius
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I'm assuming these are the endpoints of the diameter.
Use the distance formula to find the distance between the points, which would be the diameter, then divide by 2 to find the radius.
D%5E2=%2812%2F5-%28-3%29%29%5E2%2B%282%2F3-1%2F4%29%5E2
D%5E2=%2812%2F5%2B15%2F5%29%5E2%2B%288%2F12-3%2F12%29%5E2
D%5E2=%2827%2F5%29%5E2%2B%285%2F12%29%5E2
D%5E2=729%2F25%2B25%2F144
D%5E2=104976%2F3600%2B625%2F3600
D%5E2=105601%2F3600
D=sqrt%28105601%29%2F60
So then,
R=sqrt%28105601%29%2F120