Write the equation of a circle with centre (1,2) and the radius 5 ?

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Write the equation of a circle with centre (1,2) and the radius 5 ?

Ravindra Pindel 18th Oct, 2021

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Answer (1)

Ravindra Pindel 18th Oct, 2021

Equation of circle => $(x-1)^2 + (y-2)^2 = 5^2$

$x^2 -2x + 1 + y^2 + 4y + 4 = 25$

$x^2 -2x + y^2 + 4y = 20$

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