23. Brooke paints the outsides of the square walls and triangular ceilings of her treehouse. What area does she paint?

Step 1 ：Find the area of each square wall: \(A_{wall} = side^2\)

Step 2 ：Find the area of each triangular ceiling: \(A_{ceiling} = \frac{1}{2} base \cdot height\)

Step 3 ：Calculate the total area: \(Painted \ area = 4A_{wall} + 2A_{ceiling}\)