1. VOLUME OF SOLIDS

2. VOLUME OF PRISMS
V = Area of Base x Height V = (8 x 6 ) x 10 V = 48 x 10 V = 480 cm3
10 cm
All measurements must be in the same UNIT before doing ANY calculations !
6 cm
8 cm

3. V = Area of the base X Height Area of base = 7 x 5 x 6 2
Example #2
Find the volume of a prism that is 15 cm high and has a pentagonal base. The apothem is 60 mm, side length is 7cm. Give your answer in cubic centimeters.
V = Area of the base X Height
Area of base = 7 x 5 x 6 2
Area of base = 105
Volume = Area of base X Height
Volume x 15
Volume = cm3

4. Work for Volume of Prisms
Workbook
Page 193 # 17 a,b (cube),c
Page 194 # 19
#23
#24
#25
#26
#28a

5. How to find height when you know volume and area of the base.
Volume = Area of Base X Height
Height = Volume
Area of Base
Example: Prism has a volume of 2400 cm3 and an
area of base of 120cm2 What is its height?
Height = Volume
Abase
H = 2400
120
H = 20 cm
V= 2400 cm3
Abase= 120 cm2

6. How to find area of base when you know volume and height.
Area base = Volume
Height
Find the area of the base of a prism
That has a volume of 300 cm3
and a height of 5 cm.
Area base = 300 5
Area base = 60 cm2
V= 300 cm3

7. Volume of Cylinders
Volume = Area of Base X Height Volume = πr2 X Height Volume = π22 X 10 Volume = cm3 Remember to ALWAYS work in ONE unit.
H = 10cm
d= 4 cm