Question

Write the standard equation of the circle with center (-3, 5) and a diameter of 10.

A. (x + 3)^2 + (y – 5)*2 = 25
B. (x + 3)^2 + (y – 5)^2 = 100
C. (x – 5)^2+ (y + 3)^2 = 5
D. (x – 3)^2 + (y + 5)^2 = 85

Answer 1

http://www.mathwarehouse.com/geometry/circle/images/equation-of-circle/general-formula-equation-of-circle.png

Answer 2

r = radius
diameter = 2r
so if the diameter is 10, the radius is half that

Answer 3

c

Answer 4

x y
(-3 , 5)