A stadium in circular shape has area 91000 Sq.ft. How to find center of the stadium?
no idea where the center is. However, since the area of a circle A=πr^2, the center will be located √(9100/π) ft from any point on the circle.
But that may be hard to measure. So what you can do is pick any two pairs of points on the circle (call them A,B and C,D) and draw the chords AB and CD. Now, since a radius from the center will be perpendicular to any such chords, just construct the perpendicular bisectors of the chords, and where those two lines intersect will be the center of the circle. You still won't know the radius of the circle, but you will know where it is.
Or, you can pick two points A and B on the circle, and using those two points as centers, draw two circles of radius √(9100/π). Those two circles will intersect at two points: one outside the circle, and one inside. The point inside the circle will be its center.