ABCD is a parallelogram. If AB = 3.6 cm and altitude corresponding to sides AB and AD are respectively 5 cm and 4 cm, then AD will be :

1. 5.5 cm

2. 3.5 cm

3. 2.5 cm

4. 4.5 cm

A triangle, a parallelogram and a rectangle have the same base and are situated between the same parallels. The ratio of their areas is :

1. 2 : 1 : 2

2. 2 : 2 : 1

3. 1 : 2 : 3

4. 1 : 2 : 2

A triangle and a parallelogram, both having base 5 cm, are situated between the same parallels. If the height of the triangle is 4 cm, then the area of the parallelogram is :

1. 20 cm²

2. 40 cm²

3. 10 cm²

4. 5 cm²

The area of the parallelogram PQRS is 16 sq. units. If M is the mid-point of PQ, then the area of ΔQMR is :

1. 16 sq. units

2. 8 sq. units

3. 4 sq. units

4. 2 sq. units