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What is the result when the number 86 is decreased by 9%?The area of a circle is 16pi square inches. What is the 원둘레?Give the exact answer in simplest form.Find the area of the stained glass window shown if the 지름 of the semi-circle is 63 inches. Use 3.14 for pi, round your answer to the nearest square inch, and enter the number only.35 less than a number is at least 1206.5 is 25% of what number?