The area of a square on the diagonal of a cube is 48 cm². Each edge of the cube is :

1. 2 cm

2. 4 cm

3. 6 cm

4. 8 cm

A cuboid has length = 4 cm, breadth = 3 cm and diagonal = 13 cm. The volume of the cuboid is :

1. 156 cm³

2. 288 cm³

3. 144 cm³

4. 78 cm³

The dimensional ratio of the sides of a cuboid is 3 : 2 : 1. If its volume is 1296 cm³; the actual dimensions of the cuboid are :

1. 12 cm, 12 cm and 8 cm

2. 8 cm, 8 cm and 12 cm

3. 12 cm, 12 cm and 12 cm

4. 18 cm, 12 cm and 6 cm

A tank with dimensions 12 m, 10 m and 8 m is dug and the soil taken out of it is spread uniformly on a field of length = 40 m and breadth = 32 m. The rise in level of the field is :

1. 7.5 m

2. 7.5 cm

3. 75 cm

4. 75 m