Answer:
The volume of the prism is 1323 feet³ (cubic feet).
Step-by-step explanation:
1. Annotate the values.
Length= 21 feet.
Width= 9 feet.
Height= 7 feet.
2. Find a formula.
The formula to calculate the volume of rectangular prisms is the following:
[tex]\sf V_{RP} =l*w*h[/tex]; where "l" is the length; "w" is the width, and "h" is the height of the prism.
Check the attached image to see where these values are measured from.
3. Calculate.
Substitute the variables in the formula by the values on step 1.
[tex]\sf V_{RP} =l*w*h=(21\ feet)*(9\ feet)*(7\ feet)=\boxed{\sf1323\ feet}.[/tex]
The volume of the prism is 1323 feet³ (cubic feet).
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