The volume of the rectangular pyramid is 28 cubic feet.
The volume of a pyramid of base B and height H is given by:
[tex]V = (1/3)*B*H[/tex]
Here we know that the height is H = 7ft, and the base is a rectangle of 4ft by 3ft, so the area of the base is:
[tex]B = 4ft*3t = 12ft^2[/tex]
Then the volume of the pyramid is:
[tex]V = (1/3)*7ft*12ft^2 = 28ft^3[/tex]
If you want to learn more about volumes:
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