To find the perimeter of a regular octagon, you need to know that a regular octagon has 8 equal sides.
The formula to calculate the perimeter (P) of a regular polygon is:
P = number of sides × length of one side
In this case, a regular octagon has 8 sides, and each side measures 8 cm. So we can plug these values into the formula:
P = 8 sides × 8 cm = 64 cm
Thus, the perimeter of the regular octagon is 64 cm.