Answer :
Answer:
Step-by-step explanation:
i think eq. of circle is
x²+y²-2x+4y-18=0
compare with x²+y²+2gx+2fy+c=0
center is (-g,-f) or (1,-2)
radius is √(g²+f²-c)=√((1)²+(-2)²-(-18))
=√(1+4+18)
=√23
Answer:
Step-by-step explanation:
i think eq. of circle is
x²+y²-2x+4y-18=0
compare with x²+y²+2gx+2fy+c=0
center is (-g,-f) or (1,-2)
radius is √(g²+f²-c)=√((1)²+(-2)²-(-18))
=√(1+4+18)
=√23