1. Sec 10-1B: Volume of Prismspg

2. Volume of a Rectangular Prism
We use the formula
V = l x w x h
Where l is length, w is width and h is height.
What is l?
What is w?
What is h?
17 m
17 m
6 m
8 m
8 m
6 m
V = l x w x h
V = (17 m)(8 m)(6 m)
V = 816 m3
Volume is always in cubic units.

3. Volume of a Triangular Prism
A triangular prism has
bases that are triangles
so we use the formula
V = Bh, where B is the
area of the base.
10 ft
30 ft
11 ft
B = ½ bh
V = Bh
B = ½ (11 ft)(10 ft)
V = (55 ft2)(30ft)
B = 55 ft2
V = 1,650 ft3

4. Let’s Work this Problem!
Calculate the Volume
First, calculate the area
of the base
B = ½ bh
5.2
B = ½ (6)(5.2) 11
B = 15.6 u 2 6
We now use V = Bh to find the volume.
V = (15.6 u2)(11 u)
V = Bh
V = u3