Students can go through AP Board 9th Class Maths Notes Chapter 10 Surface Areas and Volumes to understand and remember the concepts easily.

## AP State Board Syllabus 9th Class Maths Notes Chapter 10 Surface Areas and Volumes

→ Cuboid and cube may be treated as regular prisms having six faces.

→ Solids whose lateral surfaces are parallelograms are called prisms,

→ Solids whole lateral surfaces are triangles are called pyramids.

→ Cube and cuboid are also prisms.

→ Volume of a pyramid = $$\frac{1}{3}$$ Area of the base × height
= $$\frac{1}{3}$$ of the volume of right prism.