What is the center and radius of this circle?

Center: (3, -5); Radius: 7

Center: (3, -5); Radius: 14

Center: (-5, 3); Radius: 14

Center: (-5, 3); Radius: 7

Question

What is the center and radius of this circle?

 Center: (3, -5); Radius: 7

 Center: (3, -5); Radius: 14

 Center: (-5, 3); Radius: 14

 Center: (-5, 3); Radius: 7

anonymous · Answer

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anonymous · Answer

diameter is  14 (distance between two extrem points on either x or y axis  )  so radius  is  =7
from the figuge  and knowing radius is  =7  centre is at  (-5,3 )

jim_thompson5910 · Answer

To find the center, you need to find the midpoint of this blue line segment

jim_thompson5910 · Answer

notice how the red endpoints are the points (-12, 3) and (2,3)

anonymous · Answer

Oh okay so  so the center is (-5, 3) and the radius is 7

jim_thompson5910 · Answer

yep the center is (-5,3)

once you have the center, you just measure the distance from that center to any point on the circle to find the radius

it's probably easiest to pick either red point

jim_thompson5910 · Answer

see this

anonymous · Answer

Oh wow thank you!

jim_thompson5910 · Answer

you're welcome