The diameter of a circle centre O is 26 cm. If a chord \(\overline{PQ}\) is drawn such that it is 5 cm from O to the centre of the chord, calculate, correct to the nearest whole number, the 

(a)\(\angle\)POQ

(b) Area of the minor segment formed by the chord \(\overline{PQ}\). [take \(\pi\) = \(\frac{22}{7}\)]