The endpoints of the diameter of a circle are (-3,2) and (5,-6). Find the center and radius of the circle. Write the general equation of this circle.

Question

The endpoints of the diameter of  a circle are (-3,2) and (5,-6). Find the center and radius of the circle. Write the general equation of this circle.

anonymous · Answer

Get midpoint, thus radius and write down equation.

anonymous · Answer

i got my center but the radius not coming out right.

anonymous · Answer

The radius u have to calculate as the distance between midpoint and one of the given points using the "distance formula"

anonymous · Answer

its not giving me the right answer.

anonymous · Answer

What formula u are using?

anonymous · Answer

$$d= \sqrt{(x _{2}-x _{1}}) + (y _{2}-y _{1})$$

anonymous · Answer

you have to square (x2-x1) and (y2-y1)

anonymous · Answer

yea i know 4got to put it.

anonymous · Answer

but i did that and my radius not the same as the back of my book.