A sheet of tin is cut so as to form a circular ring that has an area of 18 square inches.The total outer and inner perimeters of the ring measure 36 inches.Find the inner radii and the outer radii of the ring.Use area of circle=派r^ circumference=2
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a tin of 请帮下忙
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A sheet of tin is cut so as to form a circular ring that has an area of 18 square inches.The total outer and inner perimeters of the ring measure 36 inches.Find the inner radii and the outer radii of the ring.Use area of circle=派r^ circumference=2
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英语翻译英语翻译 1 what is in bag?2 A bar of soap and a tin of tobacco 3 is that tin of tobacco for me?4 well it's certainly not for me 第三和第四句是什么意思