Matt wants to repaint his house. He needs to paint three walls in his living room, which is a square 40 feet by 40 feet, and all four walls in his bedroom, which is a rectangle 10 feet by 12 feet. All the walls in Matt's house are 10 feet tall. How many total square feet of wall does Matt need to paint?
Please reason step by step, and put your final answer within \boxed{}.
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