Question

The smallest circle with centre on y axis and passing through the point (7,3) find radius of circle ?

Answer 1

Answer:

radius 7

Step-by-step explanation:

The point on the y axis that is nearest to (7, 3) is (0, 3), straight across from it.

[ To verify this, the distance between a point (0,y) and (7,3) is √(7² + (y-3)²), and this is smallest when (y-3)² = 0. ]

So the centre of the circle will neet to be at (0,3) and the radius will be 7, being the distance from (0,3) to (7,3).

Answer 2

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$<marquee><b><font colour="red">$ Radius = 7☺