In the adjoining figure, PQ || CA and all lengths are given in centimetres. The length of BC is

1. 6.4 cm

2. 7.4 cm

3. 8 cm

4. 9 cm

In the adjoining figure, MN || QR. If PN = 3.6 cm, NR = 2.4 cm and PQ = 5 cm, then PM is

1. 4 cm

2. 3.6 cm

3. 2 cm

4. 3 cm

If the areas of two similar triangles are in the ratio 4 : 9, then their corresponding sides are in the ratio

1. 9 : 4

2. 3 : 2

3. 2 : 3

4. 16 : 81

If △ABC ~ △PQR, BC = 8 cm and QR = 6 cm, then the ratio of the areas of △ABC and △PQR is

1. 8 : 6

2. 3 : 4

3. 9 : 16

4. 16 : 9