See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
10 questions from this quiz
Points at fixed distance from centre
x2+y2=r2x^2 + y^2 = r^2x2+y2=r2
Radius of the circle
Diameter is 2r2r2r
C=2πrC = 2\pi rC=2πr
A=πr2A = \pi r^2A=πr2
Substitute into equation; if true, on circle
r=7r = 7r=7
Yes, it lies on the circle
Coordinates of any point on circle
Select your subjects, and get access to A+ resources today.