You cannot.
The perimeter alone does not provide enough information unless the octagon is regular and there is no valid reason to assume that it is.
Perimeter = 100 inches Area = 600 square inches
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.
for area you times the two numbers and for perimeter you add the numbers
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 = 4 x sqrt 72 = 33.94 in area = 72 squinches
The perimeter of a octagon is the sum of all its sides.
Perimeter = 100 inches Area = 600 square inches
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.
Divide the perimeter by eight.
Find the area of an equilateral triangle that has a perimeter of 21 inches. Round the answer to one decimal place.
We searched as far below as possible and were unable to find the octagon.
for area you times the two numbers and for perimeter you add the numbers
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 = 4 x sqrt 72 = 33.94 in area = 72 squinches
Perimeter = 8 x (length of one side)
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.
measure each edge and times it by eight.