# Mensuration: A branch of mathematics that deals with measurement of areas and volumes for the various geometrical figures. It contains 1.Surface area and volumes 2.Heron’s Formula

## Concepts 1.Area : The amount of two-dimensional space taken up by an object. 2. Volume : The capacity of any solid shape.

Area
Total Surface Area (TSA)-Area including the curved surface area & base area.
Curve Surface Area/Lateral Surface Area (CSA)- Area which excludes base area & only contains curve surface area.

Important Formulas

2-D Shapes

Solid Shapes

# Heron’s formula

Let’s practice more on Eckovation app

Given above are all the important points for this chapter. Keep practicing and take help from the video lessons.Moreover, to judge the level of your understanding, take part in quiz & discussion

Refer to the below link for detailed notes and practice sessions.
Questionnaire and notes of other chapter of class 9th is also available, for that you can download the app ECKOVATION
(available on both IOS and android)