Question 6 • Grade 7 Mathematics
Each wall has an area of 9 × 12 = 108 square feet, so together they total 216 square feet. Subtract the window area (3 × 2 = 6) and the door area (3 × 7 = 21): 216 − 6 − 21 = 189 square feet, so the answer is 189 ft squared.
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