If the area of the circle 4x^2 + 4y^2 - 8x + 16y + k = 0 is 9 sq unit, then the value of k is

MHT CET Mathematics question

If the area of the circle is sq unit, then the value of is

Answer: (C)

The circle is with $ = 1 + 4 -

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Question ID VK-027447