Need help please!

[Etrujillo]

I think #29. (X-5)^+(y-1)^=10
#30 center =(-2,1) radius =4

I dont know #28 please help and please let me know if the other answers are correct.

 

[Harry_the_cat]

I think #29. (X-5)^+(y-1)^=10
#30 center =(-2,1) radius =4

I dont know #28 please help and please let me know if the other answers are correct.

Q28: What is the radius of the circle? Now use that radius to find the circumference and area of the circle.

Q29: (x-5)^2 + (y-1)^2 = ?? Not sure how you got 10 ? Use the distance between two points formula to find the distance between the centre of the circle and the point on the circle. This is the radius. Have another go.

Q30: correct