SOLUTION: What is the center and radius of the circle: 4x^2+4y^2+48=640 for this equation, i divided all terms by 4. Therefore, leaving the equation with: x^2+y^2+12=160 Next, i brough

Question 458448: What is the center and radius of the circle: 4x^2+4y^2+48=640
for this equation, i divided all terms by 4. Therefore, leaving the equation with: x^2+y^2+12=160
Next, i brought the 12 to the other side of the = sign; thus, making the equation: x^2+y^2= 148
Now, we know that the equation of the circle is: (x+h)^2+(y+k)^2= r^2
since we can see from the equation: x^2+y^2=148
there is no h or k and therefore, the center of the circle is (0,0)
we know that the radius squared is 148 so in order to get the radius you need to square root the 148. therefore, the square root of 148 is 12.16552506
is there a mistake that i made with this equation? please let me know!
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Looks good to me.

RELATED QUESTIONS
Find the center and radius of the circle given by the equation... (answered by stanbon)

What is the center and the radius of this general form equation? 4x^2 + 4y^2 + 4x - 63 (answered by drk,richwmiller)

Find the center and radius of the circle whose equation is... (answered by Alan3354)

find the center and radius of the circle (X+3)^2+(y+2)^2=4 Center= radius= Show the... (answered by josgarithmetic)

What is the center and the radius of the circle represented by the equation :... (answered by scott8148)

What is the center and radius of the circle with the given equation? (x � 1)^2 + (y +... (answered by AnlytcPhil)

Identify the conic section represented by each equation. For a poraola, give the vertex.... (answered by Alan3354)

What is the center and the radius of the circle for the equation... (answered by Fombitz)

find the center and radius of the circle... (answered by jim_thompson5910)