Answer:
Which pyramid has a greater volume? the first pyramid (left pyramid) with a volume of

How much greater is its volume? its volume is
greater than the second (right) pyramid
Explanation:
Equation to find the volume of a pyramid:

where
is the area of the base, and
is the height.
length:

width:

height:

Area of the rectangular base:

Volume of the first pyramid:

length:

width:

height:

Area of the rectangular base:

Volume of the second pyramid:

Which pyramid has a greater volume? the first pyramid (left pyramid) with a volume of

How much greater is its volume? its volume is
greater than the second (right) pyramid