Volume And Capacity - Introduction - video Dailymotion

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00:00Hi kids! Today we will learn about volume and capacity. So let's get started.

00:10Volume of an object is the amount of liquid it can contain or displace.

00:17The volume of a container is a measure of how much liquid it can hold.

00:24It is also known as the capacity of the container.

00:29In metric system, volume is mostly measured in liters or milliliters.

00:37Now let's see what is a unit cube and what is its volume.

00:44A cube where each edge measures one centimeter is called a unit cube.

00:51Now let's find its volume.

00:54We can calculate its volume with a simple formula, which is length multiplied by breadth multiplied by height.

01:05Here, length, breadth, and height all are one centimeter.

01:12So its volume will be volume equals 1 multiplied by 1 multiplied by 1 equals 1.

01:22And volume is measured in cubic units.

01:26So its volume is 1 centimeter cubed.

01:31We learned a unit cube is a cube with length, width, and height equals 1 centimeter.

01:41And its volume is 1 centimeter cubed.

01:45Now let's see what is the capacity of the same cube.

01:50A unit cube can hold 1 milliliter of liquid.

01:55So capacity of unit cube is 1 milliliter.

02:001 centimeter cubed equals 1 milliliter.

02:05So a unit cube has capacity of 1 milliliter and volume is 1 centimeter cubed.

02:14So kids, now we know that volume of a unit cube is 1 centimeter cubed.

02:22Now we will be using unit cubes to show the capacity and volume of various solid objects, which are made up of unit cubes.

02:34Here we have a figure, which is made up of all unit cubes.

02:40We have to find out its volume and capacity.

02:44For that, first of all, we will find out it is made up of how many unit cubes?

02:52Let's see.

02:54Three cubes at bottom and one above.

02:58So it's made up of four unit cubes.

03:02So its volume is equal to the volume of four unit cubes.

03:08So the volume of this figure is 4 multiplied by volume of a unit cube.

03:15And we know volume of a unit cube is 1 centimeter cubed.

03:21So volume of this figure is 4 multiplied by 1.

03:27That is 4 centimeter cubed.

03:31And its capacity is equal to capacity of four unit cubes.

03:37And the capacity of one unit cube is 1 milliliter.

03:43So the capacity of this figure is 4 milliliters.

03:48Now, let's take another example.

03:52Now let's find out the volume of figure A, which is made up of all unit cubes.

03:59So kids, we need to find out number of unit cubes used to make the figure A to find its volume.

04:09Let's find it out.

04:12Figure A has two rows of four unit cubes each.

04:17So figure A is made up of eight unit cubes.

04:22And volume of one unit cube is 1 centimeter cubed.

04:28So volume of figure is 8 multiplied by 1 equals 8 centimeter cubed.

04:35Similarity, capacity of this figure A is also 8 milliliters.

04:41As capacity of each unit cube is 1 milliliter.

04:46So volume and capacity are same, but units are different.

04:52And to calculate the volume and capacity of solid objects, which are made up of unit cubes,

04:59we just need to know the number of unit cubes there in the figure.

05:05And its volume and capacity is same as the number of unit cubes it is made up of.

05:12So kids, now you may go ahead and take a quiz to learn more.

05:17Bye-bye.

Volume And Capacity - Introduction

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