Advertisements
Advertisements
प्रश्न
A wooden box (including the lid) has external dimensions 40 cm by 34 cm by 30 cm. If the wood is 1 cm thick, how many cm3 of wood is used in it?
Advertisements
उत्तर
External dimensions of wooden box are 40 cm × 34 cm × 30 cm.
Since, the wood is 1 cm thick, it means the internal dimensions will be (40 – 2) cm × (34 – 2) cm × (30 – 2) cm = 38 cm × 32 cm × 28 cm
∴ Wood used for the box = Volume of the wooden box with external dimensions – Volume of the wooden box with internal dimensions
= 40 × 34 × 30 – 38 × 32 × 28
= 40800 – 34048
= 6752 cm3
APPEARS IN
संबंधित प्रश्न
Find the volume of a cube whose side is 3.5 m
Find the number of bricks of dimension 20 cm × 5 cm × 10 cm required to construct a wall of dimension 300 cm × 200 cm × 20 cm
How many sack of dimension 15 cm × 45 cm × 90 cm filled with rice can be kept in a room of dimension 3 m × 18 m × 9 m
Anan made a big cube having double the side of your paper cube. How many of your paper cubes will fit in it? Try doing it by collecting all the cubes made in your class.
Ganesh and Dinga want to pack 4000-centimeter cubes inboxes. These are to be sent to a school. There are three different boxes available for packing.
- What is your guess? Who is right?
Ganesh and Dinga want to pack 4000-centimeter cubes inboxes. These are to be sent to a school. There are three different boxes available for packing.
- How can Ganesh and Dinga test their guesses before packing the cubes in the boxes? Discuss with your friend.
Three cubes of metal whose edges are 6 cm, 8 cm and 10 cm respectively are melted to form a single cube. The edge of the new cube is ______.
A cube of side 4 cm is painted on all its sides. If it is sliced in 1 cubic cm cubes, then number of such cubes that will have exactly two of their faces painted is ______.
If the length of each edge of a cube is tripled, what will be the change in its volume?
What will happen to the volume of the cube, if its edge is tripled?
