解答
解答
求解步骤
Translate the problem into an equation:
求解
流行的例子
The 周长 of a circle is 17pi m. What is the area, in square meters? Express your answer in terms of pipi8 times the sum of a number x and 105 years ago alex was 12 times as old as Tom.Alex is 41 now. How old is Tom now?Twice the 差集 of a number and 1.The radius of a circle is 9 m. Find its 周长 in terms of pipi.