해법
해법
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Represent the number with
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The perimeter of a rectangular painting is 242cm :If the width of the painting is 55cm , what is its length?mary skates at a circular rink that has a 반지름 of 5 yards. what is the area of the skating rinkThe diameter of a circle is 20 m. Find the 원둘레 to the nearest tenth.the sum of three consecutive even numbers is equal to 72. what are the numbers?You want to have 300,000 when you retire in 20 years. If you can earn 8% interest compounded continuously, how much would you need to deposit now into the account to reach your retirement goal?