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Question

The area of the curve x2+y2=2ax is

A
πa2
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B
2πa2
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C
4πa2
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D
12πa2
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Solution

The correct option is A πa2
x2+y22ax=0

We can see that the given equation is nothing but the equation of Circle,
And radius of the circle is a.
Hence the area of triangle isπa2.


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