Question

The figure ABCD is a square that is divided into 4 squares

The area of the shaded part is 18 square inches.
What is the length of each side of the square

Answer 1

Denote x = CD/2 = BC/2

Area of shaded part = x^2/2 = 18 => x^2 = 36 => x =6

Then length of each side of the square = 2x = 2*6 = 12