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The largest value of a for which the cir...

The largest value of a for which the circle `x^2 +y^2 = a^2` falls totally in the interior of the parabola `y^2= 4(x + 4)` is (A) `4sqrt3` (B) 4 (C) `4sqrt6/7` (D) `2sqrt3`

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The largest value of a for which the circle x^2+y^2=a^2 falls totally in the interior of the parabola y^2=4(x+4) is (a) 4sqrt(3) (b) 4 (c) 4(sqrt(6))/7 (d) 2sqrt(3)

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