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Joy is 2/3 as old as Lyd. Six years ago, Joy is 20 less than Lyd's age.:How old are they 6 years ago?The radius of a 円 is 2 meters. What is the 円's area?The perimeter of a rectangular garden is 364 feet. If the length of the garden is 99 feet, what is its width?The 直径 of a circle is 6 m. Find its area in terms ofarea The area of a circle is 4.5216 square inches. What is the circle's 円周?