Revision Notes For CBSE Class 9 Maths Chapter -13 Surface Areas and Volumes

An Area is defined as the total space occupied by a two-dimensional flat surface. It is mainly measured in square units. Total Surface Area and Curved Surface Area are two different types of an Area.

CBSE Notes Class 9 Maths Chapter 13 Surface Areas and Volumes

The sum of the areas of all the surfaces of a 3D shape is termed as the surface area. The surface area of a closed surface includes its length, width (w), and its height (h).

Volume is the measuring quantity which is mainly used to measure the amount of space occupied by a closed surface. Volume is mainly measured in the cubic metre. The formulas for calculating the Surface Areas and Volumes varies for different geometrical shapes.

For more information about the Surface Areas and Volumes, click on the below-mentioned links.

Frequently asked Questions on CBSE Class 9 Maths Notes Chapter 13: Surface Areas and Volumes


What is ‘Surface area’?

Surface area is the amount of space covering the outside of a three-dimensional shape.


How can ‘Volume’ be defined?

Volume is the quantity of three-dimensional space occupied by a liquid, solid, or gas.


What is ‘Cubic’ measurement?

It is a unit (such as cubic inch or cubic centimeter) for measuring volume)


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