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

If the area of the parallelogram ABCD is 10 cm², then the area of ΔBCD is :

1. 10 cm²

2. 5 cm²

3. 20 cm²

4. 25 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

ABCD is a rectangle and ABQC is a parallelogram. If the area of ΔABD is 5 sq. cm, then the area of the parallelogram is :

1. 5 sq. cm

2. 10 sq. cm

3. 20 sq. cm

4. 30 sq. cm