Peter attempted to use the divide-center method to find the line of best fit on a scatterplot. what was his mistake?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).