Determine the radius of the circle

[@Glitchedboy]

You are so helpful, please keep teaching math

[@manikumarikoram6384]

But in india we have a direct formula for the radius of the circle We know that the equation of circle is x²+y²+2gx+2fy+c=0 Then radius, r=√(g²+f²-c)

[@PokemonInvestor0]

Big fan!

[@DT_Taquisha]

please move to our school

[@wes9627]

(x+1)^2+(y+7)^2=1+49-34=16=r^2. Thus, r=4

[@idrisgarton5713]

the centre is -1,-7 i think