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Mathematics 11 Online
OpenStudy (anonymous):

What is the standard form of the equation of the given circle with center A(4, 8)?

OpenStudy (anonymous):

OpenStudy (welshfella):

standard form is (x - a)^2 + (y - b)^2 = r^2 where the center is (a,b) and the radius = r

OpenStudy (anonymous):

a 4,2

OpenStudy (welshfella):

a = 4 , b = 8 and the radius is on your diagram

OpenStudy (anonymous):

so thats the answer

OpenStudy (welshfella):

well you need to plug in the values of a , b and r into the standard equation

OpenStudy (welshfella):

i'll start it off for you (x - 4)^2 + - plugging in 4 for a

OpenStudy (welshfella):

now you need to plug in b and r

OpenStudy (welshfella):

just plug these into the equation I posted in my first post

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