A rhombus is formed by two radii and two chords of a circle whose radius is 16 metres. The area of the rhombus in square metre is:
OABC is a rhombus whose three vertices A, B and C lie on a circle with centre O.
(i) If the radius of the circle is 10 cm, find the area of the rhombus.
(ii) If the area of the rhombus is 32√3 cm2 find the radius of the circle.