Two sides of a triangle are 12 cm and 15 cm. If the height of the triangle corresponding to 12 cm side is 10 cm, then the height of the triangle corresponding to 15 cm side is:

1. 4 cm

2. 12 cm

3. 8 cm

4. 16 cm

The area of a triangle with sides 4 cm, 3 cm and 5 cm is:

1. 12 cm²

2. 15 cm²

3. 10 cm²

4. 6 cm²

The altitude of an isosceles triangle is 4 cm and its base is 2 cm more than its height. The area of the triangle is :

1. 24 cm²

2. 12 cm²

3. 16 cm²

4. 8 cm²