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Question

The area of the circle having its centre at (3, 4) and touching the line 5x+12y11=0 is _____

A
16πsq.units
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B
4πsq.units
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C
12πsq.units
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D
25πsq.units
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Solution

The correct option is A 16πsq.units
If line 5x+12y11=0 touches the circle, then
radius of the circle will be same as the distance of line from the center of the circle
r=5(3)+12(4)1152+122=5213=4
Hence area of the circle is =π(4)2=16π sq. units

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