The equation of a circle centered at the origin (0, 0) with a radius of 15 is given by the formula ( x^2 + y^2 = r^2 ), where ( r ) is the radius. Substituting the radius, the equation becomes ( x^2 + y^2 = 15^2 ). Therefore, the equation simplifies to ( x^2 + y^2 = 225 ).
The equation is: x2+y2 = radius2
x² + y² = 1.
x² + y² = 100.
x² + y² = 16.
x² + y² = 49.
The radius of the circle decreases when you make the circle smaller.
The equation is: x2+y2 = radius2
x2 + y2 =144
x² + y² = 1.
x² + y² = 100.
x² + y² = 225.
x2 + y2 = 400
x² + y² = 16.
x² + y² = 64.
x² + y² = 49.
x² + y² = 3.
x² + y² = 36.