Formula of the Volume of a Pyramid is:

×Area of Base×Height of pyramid
V=

×3×4 (area of base=3 ft²)
V=4 ft³

and 3 cancels out.
Answer:
B and D
Step-by-step explanation:
B and D are the only linear functions as the respected differential variable or c in this case, and the product variable, y in this case, have an exponent = 1. All the others have a quadratic term or an x^2
Volume= whd
= (48)(34)(12)
= 19,584 yards³