First, put the numbers in order. 20, 21, 24, 25, 28, 29, 35, 37, 39, 42, 44 Find the median, the median is 29. Find the median of the 5 numbers AFTER 29 which is 39, therefore, 39 is your third quartile.
The regular polygon with an apothegm of 5 inches, that has a perimeter that is closest to the circumference of a circle with a diameter of 10.8 inches is an octagon. The correct answer is D.