Please, post problems separately!
1). If a circle, regular hexagon and a regular octagon have the same area and if the perimeter of the circle is represented by "c", that of the hexagon by "h" and that of the octagon by "o", then which of the following is true?
A) c > o > h
B) c > h > o
C) h > c > o
D) o > h > c
E) h > o > c
Fast way (20 sec):
1. the circle have the least perimeter for the given area among all flat figures.
2. n-angle becomes similar to the circle with growth of n. (triangle is the most 'ineffective" figure and has the greatest perimeter at the same given area)
3. So, h>o>c
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