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A rectangular swimming pool is twice as long as it is wide. A small concrete walkway surrounds the pool. The walkway is a constant 2 feet wide and has an area of 196 square feet. Find the dimensions of the pool.
Solution
Draw and label a diagram – it should look like a rectangular doughnut! Apool and walk – Apool = Awalk (2w + 4)(w + 4) – 2w2 = 196 Can you solve for w and answer?