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Find the equation of the circle with cen...

Find the equation of the circle with centre : (0, 2) and radius 2

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Centre `-=` (0,2) and radius = 2 units
`:.` Equation of circle,
`(x-h)^(2)+(y-k)^(2)=r^(2)`
`rArr" "(x-0)^(2)+(y-2)^(2)=2^(2)`
`rArr" "x^(2)+y^(2)-4y+4=4`
`rArr" "x^(2)+y^(2)-4y=0`
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Knowledge Check

  • Find the equation of the circle with centre (-3,2) and radius 4.

    A
    `(x+3)^(2) + (y-2)^2 = 16`
    B
    `(x-3)^2 + (y-2)^2 = 16`
    C
    `(x+3)^2 - (y+2)^2 = 16`
    D
    None of these

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