1.The base and height of a triangle are in the ratio 3 : 4 and its area is 216 cm2 . The height of the triangle is
2.The parallel sides of a trapezium are 9.7 cm and 6.3 cm, and the distance between them is 6.5 cm. The area of the trapezium is
3.The ratio of the areas of a circle and an equilateral triangle whose diameter and a side are respectively equal, is
4.The circumference of a circle is 100 cm. The side of a square inscribed in the circle is
5.The hour hand of a clock is 6 cm long. The area swept by it between 11.20 am and 11.55 am is