1. Volume of a prism The general formula for the volume of a prism is:
V = AH
A = cross-sectional area
H = perpendicular height
More specifically
Rectangular prism
Cylinder
Cube S L B H r h
V = LBH
V = πr2h
V = S3

2. Example 1 Find the volume of the following 7m 5m 12m V = AH = ½bh × H
= ½ × 12 × 7 × 5
= 210 m3

3. Volume of a sphere Example 2 The volume of a sphere is given by
Find the volume of a ball with a diameter of 22cm.
Diameter = 22cm
Radius = 11cm

4. Today’s work
Exercise 6E pg 211
Q1 b, d & e Q2 Q5