The area of the triangle whose three sides are 13 cm, 14 cm and 15 cm, is :

1. 72 cm²

2. 84 cm²

3. 92 cm²

4. 96 cm²

The area of the equilateral triangle of side 4 cm is :

1. 6.928 cm²

2. 6.298 cm²

3. 5.928 cm²

4. 5.528 cm²

The lengths of two adjacent sides of a parallelogram are 12 cm and 10 cm respectively. If the distance between the longer sides be 8 cm, then the distance between two shorter sides will be :

1. 9.1 cm

2. 9.2 cm

3. 9.4 cm

4. 9.6 cm

The ratio of heights of two triangles is 2 : 3 and the ratio of their areas 3 : 2. The ratio of their bases is :

1. 1 : 4

2. 2 : 8

3. 9 : 4

4. 4 : 9