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Question

If the area of triangle XOY, where O is the centre of circle, is 25 square units, then the area of circle is
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A
25π
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B
25π2
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C
50π
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D
625π
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Solution

The correct option is C 50π
Given: Area of the triangle =25
Consider that the triangle each leg is a radius of the triangle as r.
Then area of the triangle = r22
25=r22
r2=50
Now, area of the circle = πr2
We know the value of r2.
So, the area of the circle = 50π

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