THE usual text-book formula for the radial distance of the centroid of a circular arc of radius r and length 2ra, may be converted into a useful result by expressing the position of the centroid ...

In form it is a symmetrical quatrefoil with a vast circular central space that can seat some 6,000 persons. The 23m-high dome is topped with a lantern in steel and glass. The Centennial Hall is a ...