SOLUTION: A circle has a center (0,0) and radius 6 units a) Find the equation of the circle b) Find the value of b if (4,b) is on the circle Can you please help me out ? Thanks so much

Algebra ->  Circles -> SOLUTION: A circle has a center (0,0) and radius 6 units a) Find the equation of the circle b) Find the value of b if (4,b) is on the circle Can you please help me out ? Thanks so much       Log On


   



Question 797848: A circle has a center (0,0) and radius 6 units
a) Find the equation of the circle
b) Find the value of b if (4,b) is on the circle
Can you please help me out ? Thanks so much in advance:)
Can you show the steps it would help me understand better:)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A circle has a center (0,0) and radius 6 units
a) Find the equation of the circle
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The equation of a circle or radius r, center at (h,k) is
%28x-h%29%5E2+%2B+%28y-k%29%5E2+=+r%5E2
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b) Find the value of b if (4,b) is on the circle
Sub 4 for x in the equation, solve for y.