Question

Find the area of the

regular figure below:

A) 157 m2
B) 162 m2
C) 168 m2
D) 175 m2
E) 182 m2

pls show work

Answer 1

162 m^2

you can make a triangle in the corner with legs length s/2 and the angles are 45 degrees. in a 45 45 90 triangle, the legs are h/sqrt(2) where h is the hypotenuse. this means that s/2=9/2 sqrt(2), s=9 sqrt(2)

and s^2=162