A regular nonagon with a side length of 9 has an apothem of 12.4 not 16. So the question is inconsistent.
The apothem and side length are not consistent. That is, a nonagon with an apothem of 5.6 cm cannot have a side length of 4.1 cm.If the apothem is 5.6 cm then area = 102.7 cm2 whileif the side length is 4.1 cm then area = 103.9 cm2.The two answers agree at the tens place and so the most accurate answer is 100 cm2 to the nearest 10.
A = (1/2)Pa A being the area, P being the perimeter of the regular polygon, and the apothem length being a.
The area of a regular octagon: A = (2 x apothem)2- (length of side)2 or in this case A= (2 x 8.45)2 - 72
regular pentagon area of 12 000 m2 and an apothem of 40 m regular pentagon area of 12 000 m2 and an apothem of 40 m need to figure it out from area 12000 m2
By Apothem LengthThe area of a regular octagon can also be computed using its measured apothem (a line from the center to the middle of any side). The formula for an octagon with side length s and apothem a is Area = a4s . (apothem times one-half the perimeter)So for this example, (8 cm and 9.66 cm) Area = (9.66)(32) = 309.12 cm2----By Side LengthThe area of a regular octagon with side length s is given as Area = 4.828427 s2 , so for a regular octagon of side length 8 cm , the area is calculated as 309.02 cm2. (indicating an error from rounding the apothem length)(This formula is generated by adding or subtracting the missing corner triangles.)
The apothem and side length are not consistent. That is, a nonagon with an apothem of 5.6 cm cannot have a side length of 4.1 cm.If the apothem is 5.6 cm then area = 102.7 cm2 whileif the side length is 4.1 cm then area = 103.9 cm2.The two answers agree at the tens place and so the most accurate answer is 100 cm2 to the nearest 10.
Area of a regular polygon = 1/2(apothem)(perimeter) 2025 = 1/2(25)(perimeter), so the perimeter = 2025 divided by 25/2. Perimeter = 162 Side length = 162/9 Side length = 18
Area in square units = 0.5*(apothem)*(perimeter)
A = (1/2)Pa A being the area, P being the perimeter of the regular polygon, and the apothem length being a.
309.12
The area of a regular octagon: A = (2 x apothem)2- (length of side)2 or in this case A= (2 x 8.45)2 - 72
An apothem of a regular polygon is a segment from its center to the midpoint of a side. You can use the apothem to find the area of a regular polygon using this formula: A = pa/2 where p is the perimeter of the figure and a is the apothem. For a regular octagon with side length 11, the perimeter p = 8(11) = 88. So the area would be A = 88(8.85)/2 = 389.4 square units.
regular pentagon area of 12 000 m2 and an apothem of 40 m regular pentagon area of 12 000 m2 and an apothem of 40 m need to figure it out from area 12000 m2
By Apothem LengthThe area of a regular octagon can also be computed using its measured apothem (a line from the center to the middle of any side). The formula for an octagon with side length s and apothem a is Area = a4s . (apothem times one-half the perimeter)So for this example, (8 cm and 9.66 cm) Area = (9.66)(32) = 309.12 cm2----By Side LengthThe area of a regular octagon with side length s is given as Area = 4.828427 s2 , so for a regular octagon of side length 8 cm , the area is calculated as 309.02 cm2. (indicating an error from rounding the apothem length)(This formula is generated by adding or subtracting the missing corner triangles.)
First you must determin what the "apothem" is, and by that i mean what the hell that word means.
389.40
293.72