The perimeter of a octagon is the sum of all its sides.
Perimeter = 100 inches Area = 600 square inches
Divide the perimeter by eight.
Simple the Perimeter you just add the outside numbers. For area. When I look at an octagon I see a rectangle and two Trapezoids on either side of the rectangle. So find the area of each object then add the areas up and voila you got the area of a rectangle.
We searched as far below as possible and were unable to find the octagon.
Find the area of an equilateral triangle that has a perimeter of 21 inches. Round the answer to one decimal place.
perimeter = 4 x sqrt 72 = 33.94 in area = 72 squinches
You say these things to yourself: -- "The perimeter is the distance all the way around the octagon." -- "The octagon has eight sides." -- "So, if it's a 'regular' octagon, then all the sides are the same length, and each side must be 1/8 of the perimeter." -- If it's not a 'regular' octagon, then it has some longer sides and some shorter ones, and the perimeter doesn't help me find the lengths of the sides.
Perimeter = 8 x (length of one side)
If it is a regular octagon, all sides are of equal length, so multiply the length of one side by 8 to get the perimeter. For an irregular octagon add together the length of each of the eight sides to get the perimeter.
That's oddly worded. You can't find the area of a perimeter. Either way, we need to know how many sides there are. A square with 6-inch sideshas a perimeter of 24 inches and an area of 36 square inches.