So first, you must use the area of an octagon formula to find the length of one side of the given octagon... A = 2 ( 1 + √2) s^2 35 = 2 ( 1 + √2) s^2 s = 2.57 cm
Next, you must use the area of an octagon formula to find the area of the second octagon by multiplying the side length above by five. A = 2 ( 1 + √2) s^2 A = 2 ( 1 + √2) (2.57 • 5)^2 A = 736.44 cm^2
