# What is the Area of Octagon whose side is 18

## Work with steps to find Area of Octagon with sides 18

__Question:__

Find what is the area of octagon whose side is 18 inches?

__Workout :__

step1 Address the formula, input parameters and values

side = 18 in

step 2 Find Area of Octagon using side value

Area A = 2 (1 + √2 ) s²

= 2 x (1 + √2 ) x (18)² in²

= 2 x (1 + 1.4142 ) x 324 in²

= 2 x 2.4142 x 324 in²

Area A = 1564.4104 in²