Answer:
Option d. 75 times.
Step-by-step explanation:
Side length of a square pyramid of Pyramid A = 9 inches
height of pyramid A = 4 inches
where,
a = sides, h = height
= 27 × 4
= 108 inches³
and the volume of pyramid B = 8100
Now we will divide volume of pyramid B by the volume of pyramid A
= 75
Therefore, the volume of pyramid B is 75 times bigger than pyramid A.
Option d is the answer.