Page 37 - SPARK OF MATH book 6

3
In the prism below the top layer is composed of four rows of five 1cm
blocks. Therefore the volume of the top layer would be 20 cm (4x5= 20).
3

Top Layer

h=4 cm

5 cm 4 5

4 cm
4 groups of 5 cm= 20 cm

3
Since there are 4 layers and each has a volume of 20 cm , the total volume
3
of the prism must be 80 cm .

20 cm

+ 20 cm

+ 20 cm

+ 20 cm

4 layers of 20 cm= 80 cm

OR 4 20 cm= 80 cm
5 4 4= 80 cm 3
Therefore, the volume of any rectangular prism can be found with the formula:

Volume (V)= Length x Width x Height

Your Work

Write a formula to calculate the cube volume.

Show your work.

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