Regina M. answered 04/15/20
Certified High School Geometry Teacher
Since we are looking for the volume, let's look at the formula for the volume of a pyramid which is
Volume = (l*w*h)/3
where l is the length of base, w is the width of the base and h is the height of the pyramid.
Since you have a square base, the length and the width will be equal.
Now we can substitute the measurement in the problem and the formula will look like this:
Volume = (9*9*10)/3 = ?
That's it.