5. Curved surface area of a cylinder is 1232 sq cm. If circumference of its base is 154 cm, then what will be the height of the cylinder? (Take ? = 22/7)
10. ?ABC is isosceles having AB = AC and ?A = 40°. Bisectors PO and OQ of the exterior angles ?ABD and ?ACE formed by producing BC on both sides, meet at O. Then the value of ?BOC is