The measurement of the total space occupied by a solid is the volume of a three-dimensional figure. Any object that has length, breadth, and thickness is a three-dimensional figure. The difference between the total amount of space left inside the hollow body and the space occupied by the body is the volume of a hollow 3-dimensional figure. Now let’s talk about capacity. As we know that there are many hollow objects that we come across in our daily life. Capacity (with reference to volume) may be defined as the maximum amount of matter that an object can hold.

Some of the units for measuring volume are cm^{3}, m^{3} , litre, milliliter etc.

Let us take the example of a cuboid, it is a solid bounded by six rectangles and thus has six rectangular faces. The dimensions of the cuboid are as follows: length l, breadth b and height h.

Volume of the cuboid is given by

V=l×b×h

## What is capacity?

The hollow objects are filled with air or liquid which take the shape of the container. The total volume of air and water that is accumulated inside a container is the capacity of that container. We can still distinguish between volume and capacity even after many similarities. Incapacity, more concentration is on how much solid, liquid or gas can fit into the container and it also implies the bearing power of that container. We can measure capacity in cm^{3}, m^{3}, liters, milliliters, pounds, and gallons etc.

### Basic difference between volume and capacity:

Both volume and capacity are considered somewhat similar but there are some differences between them that make them different.

- The total amount of any substance which is contained in a particular space is called the volume. The total potential amount of any substance that can be contained in a space is called the capacity of that space.

Let us understand this difference with the help of an example:

A coffee mug has the capacity of 200 ml, but the volume of the mug is 250 ml Now it shows that the mug has the capacity to accommodate 200 ml whereas the mug occupies around 250 ml of space. This is because 200 ml is the hollow space that can be occupied by coffee or any other material, the remaining 50 ml of space is occupied by the material from which the coffee mug is made.

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