Answer:

Step-by-step explanation:
we know that
The volume of the square pyramid is equal to

we have
----> the length of the base of the square pyramid
---> the height of the pyramid
substitute the values in the formula


Answer: It is 46.667 percent decrease
Step-by-step explanation:
To get the answer you subtract the two values first.
15-8=7
Then divide the answer by the original value. 7/15=0.46667
Then multiply the answer by 100
0.46667x100=46.667
And there you have it. Round as necessary.