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A sphere is three dimensional, a circle is not. So a tennis ball is sphere not a circle You can draw a circle on paper but is is not a sphere.
no, it is sphere is not a perfect circle. because sphere is 3dimensional figure and circle is 2 dimensional figure
By definition a sphere is 3D. If it were only 2D it would be a circle.
Square is to cube as circle is to.......sphere
Let's be very careful here: The "great circle" of a sphere is a circle that lies on the surface ofthe sphere, so there's no way the great circle can "pass through" the sphere's center.However, in order for the circle to be a "great circle", its center must be the center of the sphere.