The document explains the concept of volume as the amount that can fill a 3-dimensional object, specifically focusing on rectangular prisms. It provides formulas and examples for calculating the volume based on measurements of length, width, and height. Additionally, it includes practical questions for determining the volume of various objects, such as cereal boxes and aquariums.

1. How many cubes can
you fit perfectly into
your box?

2. VOLUME
• The number of cubes that you just counted is
called the VOLUME of your box.
• So, what do you think VOLUME means?

3. VOLUME
VOLUME is the amount of
liquid or solid that will FILL a
3-Dimensional object!
*Always measured in units cubed (u3
)

4. QUICK DEFINITION
• 3-Dimensional objects are NOT FLAT.
• They have 3 measurements:
– Length
– Width
– Height

5. RECTANGULAR PRISM
• Today we found the volume of a 3-D object
called a RECTANGULAR PRISM, which is a solid
figure that has six faces that are all rectangles.
Opposite faces are congruent and parallel.

6. VOLUME OF A RECTANGULAR PRISM
So, what if we wanted to
find the volume of this
classroom?

7. FORMULA
Luckily, we have a formula
for that!
Volume = length × width × height

8. FIND THE VOLUME OF THIS RECTANGULAR
PRISM:
3 mm
2 mm
12 mm
NOTES!

9. FIND THE VOLUME OF THIS RECTANGULAR
PRISM:
10 in
3 in
4 in

10. FIND THE VOLUME OF THIS RECTANGULAR
PRISM:
5 cm
5 cm
5 cm

11. A cereal box has a length of 8 inches, a
width of 1.75 inches, and a height of
12.125 inches? How much cereal will
the box hold?
NOTES!

12. Alexia’s bathroom has a tub
in the shape of a rectangular prism
with a length of 1.5 meters, a width of
0.5 meter, and a height of 0.4 meter.
How many cubic feet of water can it
hold?

13. YOUR TURN!
Third person in each row please
get whiteboards, markers, and
rags for each person in your
row.
Thank you!

14. FIND THE VOLUME OF THIS RECTANGULAR
PRISM:
40 in
9 in
11 in

15. FIND THE VOLUME OF THIS RECTANGULAR
PRISM:
8 m
8 m
8 m

16. Trailers that travel on the road behind trucks are rectangular prisms.
A typical height for the inside of these trailers is 108 inches. If the
trailer is 8 ft wide and 20 ft long, what is the volume of the trailer?

17. An aquarium shaped like
a rectangular prism has a length
of 120 centimeters, a width of
60 centimeters, and a height of
100 centimeters. How much water
is needed to fill the aquarium?

18. A rectangular prism has a length of
2 inches, a height of 5 inches, and a width of 3 inches. What is the
volume of this rectangular prism?
ONE LAST QUESTION:

19. What would happen to the volume if
we multiplied the height by a scale
factor of 3?