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Question

If (-2,5) is the centre of the circle which touches y-axis, then the equation of the circle is


A

x 2+y2-4x-10y+25=0

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B

x 2+y2-4x-10y+4=0

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C

x 2+y2+4x+10y+2=0

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D

x 2+y2+4x-10y+25=0

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Solution

The correct option is D

x 2+y2+4x-10y+25=0


C =(-2,5)
Circle touches Y-axis \
r = 1 - 3 = 2
(x+2)2+(y5)2 = 22
x2+y2+4x10y+25 = 0


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