Question

Determine the equation for a circle in standard form with a radius of 18, and center (18,-18).

Answer 1

(x-18)²+(y+18)²=18².

Explanation:

1) the formula is: (x-x₀)²+(y-y₀)²=r², where (x₀;y₀) - coordinates of the centre, r - the length of the radius;

2) according to the formula above:

(x-18)²+(y+18)²=18².