Solve for x. Use the method of special right triangles

Asquare parking lot has 6,400 square meters what is the length in meters

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?