This document discusses how to calculate the volume of frustums, which are three-dimensional shapes formed by cutting off the top part of a pyramid or cone. It provides the key factors needed - the areas of the top and bottom surfaces and the height of the frustum. The volume of a full pyramid is 1/3 * height * area of base. The volume of a frustum is 1/3 * height * (area of top base + area of bottom base + square root of (top base area * bottom base area)).

1. FRUSTUM MENSURATION

2. CONICAL BUILDINGS

3. PYRAMID

8. SECTION OF A RECTANGULAR
BASE PYRAMID

9. v

10. CONSIDER A PYRAMID WHOSE TOP PART HAS BEEN SHELVED....
AS SHOWN
a
b
h
t
+
h
b2
a2

11. BASIC FACTORS TO BE KNOWN TO CALCULATE THE VOLUME OF
FRUSTUM OF A PYRAMID:-- SIDE MEASUREMENTS OF THE TOP AND
THE BOTTOM SURFACE( OR THE AREAS) AND HEIGHT OF THE PART.
Volume of a Pyramid= 1/3 * h * Area of the base
Volume of a frustum= 1/3 * h * ( B1 + B2 + v