The lateral surface area of a cube is 100 cm²; then its volume is :

1. 25 cm³

2. 125 cm³

3. 625 cm³

4. none of these

The length, the breadth and the height of a cuboid are doubled, the ratio between the volumes of the new cuboid and the original cuboid is :

1. 4 : 1

2. 1 : 4

3. 8 : 1

4. 1 : 8

The dimensions of a solid metallic cuboid are 9 cm x 8 cm x 3 cm. It is melted and recast into a cube. The edge of the cube so formed is :

1. 6 cm

2. 12 cm

3. 18 cm

4. 24 cm

The volume of a cuboid is 448 cm³. Its height is 7 cm and the base is square. Then each side of the base is :

1. 64 cm

2. 16 cm

3. 4 cm

4. 8 cm