A circle has a radius of square root of 45 units and is centered at (−2.4,−4.8). Write the equation of this circle.

Question

There is a 2nd question with the exact same format.

Answer 1

The equation of a circle with radius R and center at the point (a, b) is

(x-a)²+(y-b)²=R². So, the equation in your question is 

(x+2.4)²+(y+4.8)²=45².