Answer:
280
Step-by-step explanation:
because I just know. it is that because I know
The equation of the circle:

where:
(a; b) - coordinates of the center
r - a radius
Use:

We have:
Answer:The center: (-2; 4)The radius: r = 4
Answer:
4y = -3x +30
Firstly you have to look for the gradient or slope using the points given in the question.
Then substitute the gradient (m) into y= mx+ c
Answer:
On the circle
Step-by-step explanation:
Because all of the points on a circle are equidistant from the center, if a circle has a radius of 10 then all of the points are 10 units from the center. Using the Pythagorean Theorem, you know that the distance from (4,0) to (-2,8) is:
, meaning that it is on the circle. Hope this helps!