VOLUME The volume of a 3D shape is the amount of space within that solid.
Count the unit3
1 cube = 1 unit3
How many unit3 are there? 15 unit3
How many unit3 are there? 12 unit3
How many unit3 are there? 13 unit3
How many unit3 are there? 10 unit3
Volume of Cube Shape Cubes counted Length, l Breadth, b Height, h Volume of shape =
Look at this cube carefully
1st layer 16 unit3 1st + 2nd layer 1 6 unit3 + 1 6 unit3 3 2 unit3
Counting unit3 is just piece of cake.. 1st + 2nd + 3rd layer 3 2 unit3 + 1 6 unit3 4 8 unit3
1st + 2nd + 3rd + 4th layer 4 8 unit3 + 1 6 unit3 6 4 unit3
4 unit 4 unit 4 unit Total cubes: 64 unit3
Volume = l × b × h = 4 unit × 4 unit × 4 unit = 16 unit2 × 4 unit
The table you formed Shape Cube Cubes counted 64 unit3 Length, l Breadth, b Height, h Volume of shape, l × b × h
Look at this cuboid closely
1st layer 9 unit3 1st + 2nd layer 9 unit3 + 9 unit3 1 8 unit3
1st + 2nd + 3rd layer 1 8 unit3 + 9 unit3 2 7 unit3
1st + 2nd + 3rd + 4th layer 2 7 unit3 + 9 unit3 3 6 unit3
4 unit 3 unit 3 unit Total cubes: 36 unit3
Volume = l × b × h = 3 unit × 3 unit × 4 unit = 9 unit2 × 4 unit
The table you formed Shape Cuboid Cubes counted 36 unit3 Length, l Breadth, b Height, h 4 unit Volume of shape, l × b × h
Volume = length × breadth × height Therefore, Volume = length × breadth × height
Calculate the volume of the cube below Question 1 Calculate the volume of the cube below 5cm 125cm3
Calculate the volume of the cuboid below Question 2 Calculate the volume of the cuboid below 5m 4m 80m3
Calculate the volume of the cube below Question 3 Calculate the volume of the cube below 10m 1000m3
Calculate the volume of the cuboid below Question 5 Calculate the volume of the cuboid below 10cm 3cm 90cm3
Volume = length × breadth × height Conclusion(song) How do you calculate volume of cube and cuboid? Volume = length × breadth × height
Extension Question How many small boxes fit into the big one? 3000 240000……..80 boxes
1 litre = 1000ml also 1 litre = 1000cm3 Did you know? Therefore 1ml = 1cm3