##### Surface Areas and Volumes – Notes

**Cube and Cuboid**

A solid figure bonded by six rectangular plane faces is called a cuboid.

It is also known as rectangular prism

A cuboid in which length, breadth and height are equal is called a cube.

Surface Area or Total Surface Area of a cuboid = 2(*ɭb *+ bh +* ɭ*h)

Surface Area or Total Surface Area of a cube = 6a^{2}

Lateral Surface Area or Area of four walls of a cuboid = 2(*ɭ *+ b)h

Lateral surface area of a cube = 4a^{2}

Volume of cboid =* ɭbh*

Volume of a cube = a^{3}

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CBSE Class 9th Maths 13 - Surface Areas and Volumes - Notes

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