SOLUTION: Find the radius of the circle using these three points: (-2,2),(-8,-4),(4,-4)with a center of(-2,-4)

Algebra.Com
Question 388041: Find the radius of the circle using these three points: (-2,2),(-8,-4),(4,-4)with a center of(-2,-4)
Found 2 solutions by solver91311, ewatrrr:
Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!


The radius of the circle is the distance from any one of the given points to the given center. Use the distance formula:



which gives the distance between two points and .


John

My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!


Hi,

radius = -2 -(-8) = 6   Using points Pt(-8,-4) and center Pt(-2,-4)

 Standard Form of an Equation of a Circle is 

where Pt(h,k) is the center and r is the radius 

 (x+2)^2 + (y+4)^2 = 6^2      



 

RELATED QUESTIONS


Find the radius of the circle using these three points: (-2,2),(-8,-4),(4,-4)and center... (answered by ewatrrr)

Find the radius of a circle with these three points: (-4,-9),(-8,-9),(-6,-9)and center... (answered by Fombitz)

Find the radius of the circle with these three points: (-6,-7),(-4,-9),(-8,-9) and center  (answered by Alan3354)

How to find the radius of a circle with the points (-4,-2) and (-8,-10)
 (answered by richwmiller,Alan3354)

Find the center and radius of the circle with equation: x^2 + (y-4)^2... (answered by Alan3354)

Find the radius of the circle using these three points: (-9,-5),(-6,-2),(-3,-5) and... (answered by solver91311)

Find the equation of the circle with radius 4 and center C(-6,... (answered by ikleyn)

Circle A has center of (-2, 4) and a radius of 4, and circle B has a center of (3, 9) and  (answered by Alan3354)