Question

Write the standard equation of a circle with center (–3, –4) and radius 6.

Answer 1

x²+y²+6x+8y=11 is the required equation

Explanation:

the equation of circle is given by

(x-h)²+(y-k)²=r²

(x+3)²+(y+4)²=6²

x²+6x+9+y²+8y+16=36

x²+y²+6x+8y=36-25

x²+y²+6x+8y=11