ISEE Upper Level (grades 9-12) Quantitative Reasoning › How to find the length of a side
A regular pentagon has sidelength 72; the perimeter of a regular hexagon is 80% of that of the pentagon. Which is the greater quantity?
(A) The length of one side of the hexagon
(B) 50
A regular octagon has perimeter one meter. Which is the greater quantity?
(A) The length of one side
(B) 125 millimeters
A regular decagon has the same perimeter as the above right triangle. Give the length of one side.
A regular octagon has twice the perimeter of a regular pentagon. What is the ratio of the sidelength of the octagon to that of the pentagon?
A regular octagon has perimeter one mile.Which is the greater quantity?
(a) The length of one side
(b) 880 feet