It is not correct.
The student found the volume by multiplying the base area with the height. He forgot to divide it by 3.
Formula to find the volume of the pyramid = 1/3 base area x height
volume = 1/3 x 92 x 54 = 1656 square meters
W + 54 = s
w + 54 = 72
Answer: C
Hope this helps!! :)
U should do like this... But sry I don't know third part