**CUBOID**

The cuboid has 6 rectangular faces. The opposite rectangular plane surfaces are identical (equal in all respects). It has 8 vertices and 12 edges.Watch CUBOID VIDEO to learn more..

The perimeter of a shape is defined as the distance around the shape.

**Surface Area of a Cuboid = 2(lb + bh + hl),** where l, b and h are respectively the three edges of the cuboid.

The unit of area is taken as the square unit, because we measure the magnitude of a region by filling it with squares of side of unit length.

A cuboid, whose length, breadth and height are all equal, is called a cube.

**Volume of a Cuboid**

Solid objects occupy space. The measure of this occupied space is called the Volume of the object.

If an object is solid, then the space occupied by such an object is measured, and is termed the Volume of the object. On the other hand, if the object is hollow, then interior is empty, and can be filled with air, or some liquid that will take the shape of its container. In this case, the volume of the substance that can fill the interior is called the capacity of the container. In short, the volume of an object is the measure of the space it occupies, and the capacity of an object is the volume of substance its interior can accommodate. Hence, the unit of measurement of either of the two is cubic unit.

Suppose we say that the area of each rectangle is A, the height up to which the rectangles are stacked is h and the volume of the cuboid is V.

The area of the plane region occupied by each rectangle × height = Measure of the space occupied by the cuboid .

So, we get A × h = V

**Volume of a Cuboid = base area × height = length × breadth × height**

or l × b × h, where l, b and h are respectively the length, breadth and height of the cuboid.

**CUBOID VIDEO**

Useful for CBSE, ICSE, NCERT & International Students

Grade : 9

Subject : Maths

Lesson : Surface Areas and Volumes

Topic: CUBOID VIDEO

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