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The area of a circle is 1.5386 square feet. What is the 지름?Eight times the reciprocal of a number equals 4 times the reciprocal of 8 . Find the number.Bill will be 39 years old in four years.:How old is he now?Seven less than the product of 9 and a number equals 3Question 6, 10.1.41:The area of a 원형 is 246 square meters. Find the radius of the 원형