The percent of change can be calculated by finding the difference between the two volumes and then dividing by the original volume.
0.64 - 0.34 = 0.3
0.3/.34 = 0.882
This is approximately an 88.2% increase in volume.
Consider the cross-sectional right triangle shown in the figure.
One of its sides is the height of the pyramid, with length H. The other side is half of the square base, so its length is 81 m. The hypotenuse of this triangle is the height of one of the faces.
By right triangle trigonometry,

,
thus,

.
Answer: C) 52 m
A^3
a to the power of three
Ignore this I need some points sorry thank you