Respuesta :

I think the answer is 315 ft. because the formula for volume of a rectangular prism is lwh or l*w*h
l=9
w=5
h=7
9*5*7=315.
Hello,

So with this problem, you must know the formula to figure it out.

The formula for a pyramid is: lwh/3 This merely stands for: length× width× height÷3

So for this rectangular pyramid, these are the measurements:
Length: 5 feet
Width: 9 feet
Height: 7 feet

So, we now insert the measurements into the formula.

5× 9× 7/3

Next, we multiply...

5×9×7= 315

Then, we divide...

315÷ 3= 105

Finally we have to add a label which would be "feet".

Answer: B) 105 ft3

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