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SOLUTION: What is the area of a circle with a diameter that is 20 inches long? Round your answer to the nearest tenth. Algebra -> Circles -> SOLUTION: What is ... - read more

Jul 14, 2011 ... Best Answer: Area of a circle =π r^2 = 3.14 * 100 [ Because d= 20 inches , or r= d/ 2 = 10 inches] =314 sq. inches is the answer. Source(s): Area ... - read more

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