5. In ?ABC two medians BE and CF intersects at the point O and P,Q are the midpoints of BO and CO respectively. If the length of PQ=3cm, then the length of FE will be
8. Two circles touch externally. The sum of their areas is 130? sq.cm and the distance between their centers is 14 cm. The radius of the bigger circle is
10. Points P and Q lie on side AB and AC of triangle ABC respectively such that segment PQ is parallel to side BC. If the ratio of AP:PB is 1:4 and area of ? APQ is 4 sq cm, what is the area of trapezium PQCB?