Maths 2

  1. The total surface area of a cube is 96 cm² . The volume of the cube is : ( a ) 16 cm³ ( b ) 512 cm³ ( c ) 64 cm³ ( d ) 27 cm³ 2. A godown measures 45 m x 25 m x 10 m . Find the maximum number of crates that can be accommodated in the godown if each crate measures 1.5 mx 1.25 m x 0.5 m . 3. A 4 cm cube is cut into 1 cm cubes . Calculate the total surface area of the small cubes . What is the ratio of the total surface area of the small cubes to that of the large cube ? 4. A wooden plank of length 140 cm , breadth 70 cm and height 50 cm is cut into 490 identical cubes . Find the side of each of the smaller cube . 5. A rectangular water tanker is 200 cm long , 200 cm wide and 4 cm deep . How much litres of water it can hold ? 6. A brick has dimension 10 cm x 6 cm x 5 cm . If 1 cm³ of brick material weights 5 g , find the weight of 8 bricks . 7. How many wooden cubes each of side 15 cm can be cut from a log of wood of dimensions 3 m x 30 cm x 15 cm ?